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regulator: Updates for v4.20

This has been a very busy release for the core, some fixes, one large new
feature and a big bit of refactoring to update the GPIO API:

 - Support for coupled regulators from Dmitry Osipenko based on a prior
   attempt by Maciej Purski, allowing us to handle situations where the
   voltages on two regulators can't be too far apart from each other.
 - Conversion of the GPIO support in both drivers and the core to use
   GPIO descriptors rather than numbers, part of the overall project to
   remove GPIO numbers.
 - Support for standby mode suspend states from Andrei Stefanescu.
 - New drivers for Allwinner AXP209, Cirrus Logic Lochnagar and
   Microchip MPC16502.

Linux 4.20

This is the 4.19.12 stable release

This is the 4.14.90 stable release

This is the 4.9.147 stable release

This is the 4.4.169 stable release

This is the 3.18.131 stable release

Device properties framework updates for 4.21-rc1

 - Introduce "software nodes", analogous to the DT and ACPI firmware
   nodes except that they can be created by kernel code, in order to
   complement fwnodes representing real firmware nodes when they are
   incomplete (for example missing device properties) and to supply
   the primary fwnode when the firmware lacks hardware description
   for a device completely, and replace the "property_set" struct
   fwnode_handle type with software nodes (Heikki Krogerus).

 - Clean up the just introduced software nodes support and fix a commet
   in the graph-handling code (Colin Ian King, Marco Felsch).

ACPI updates for 4.21-rc1

 - Update the ACPICA code in the kernel to the 20181213 upstream
   revision including:
   * New Windows _OSI strings (Bob Moore, Jung-uk Kim).
   * Buffers-to-string conversions update (Bob Moore).
   * Removal of support for expressions in package elements (Bob
     Moore).
   * New option to display method/object evaluation in debug output
     (Bob Moore).
   * Compiler improvements (Bob Moore, Erik Schmauss).
   * Minor debugger fix (Erik Schmauss).
   * Disassembler improvement (Erik Schmauss).
   * Assorted cleanups (Bob Moore, Colin Ian King, Erik Schmauss).

 - Add support for a new OEM _OSI string to indicate special handling
   of secondary graphics adapters on some systems (Alex Hung).

 - Make it possible to build the ACPI subystem without PCI support
   (Sinan Kaya).

 - Make the SPCR table handling regard baud rate 0 in accordance with
   the specification of it and make the DSDT override code support
   DSDT code names generated by recent ACPICA (Andy Shevchenko, Wang
   Dongsheng, Nathan Chancellor).

 - Add clock frequency for Hisilicon Hip08 SPI controller to the ACPI
   driver for AMD SoCs (APD) (Jay Fang).

 - Fix the PM handling during device init in the ACPI driver for
   Intel SoCs (LPSS) (Hans de Goede).

 - Avoid double panic()s by clearing the APEI GHES block_status
   before panic() (Lenny Szubowicz).

 - Clean up a function invocation in the ACPI core and get rid of
   some code duplication by using the DEFINE_SHOW_ATTRIBUTE macro
   in the APEI support code (Alexey Dobriyan, Yangtao Li).

Power management updates for 4.21-rc1

 - Add sysadmin documentation for cpuidle (Rafael Wysocki).

 - Make it possible to specify a cpuidle governor from kernel
   command line, add new cpuidle state sysfs attributes for
   governor evaluation, and improve the "polling" idle state
   handling (Rafael Wysocki).

 - Fix the handling of the "required-opps" DT property in the
   operating performance points (OPP) framework, improve the
   integration of it with the generic power domains (genpd)
   framework, improve the handling of performance states in
   them and clean up the idle states vs performance states
   separation in genpd (Viresh Kumar, Ulf Hansson).

 - Add a cpufreq driver called "qcom-hw" for Qualcomm SoCs using
   a hardware engine to control CPU frequency transitions along
   with DT bindings for it (Taniya Das).

 - Fix an intel_pstate driver issue related to CPU offline and
   update the documentation of it (Srinivas Pandruvada).

 - Clean up the imx6q cpufreq driver (Anson Huang).

 - Add SPDX license IDs to cpufreq schedutil governor files (Daniel
   Lezcano).

 - Switch over the runtime PM framework to using high-res timers
   for device autosuspend to allow the control of it to be more
   precise (Vincent Guittot).

 - Disable non-wakeup ACPI GPEs during suspend-to-idle so that they
   don't prevent the system from reaching the target low-power state
   and simplify the suspend-to-idle handling on ACPI platforms
   without full Low-Power S0 Idle (LPS0) support (Rafael Wysocki).

 - Add system-wide suspend and resume support to the devfreq
   framework (Lukasz Luba).

 - Clean up the SmartReflex adaptive voltage scaling (AVS) driver and
   add an SPDX license ID to it (Nishanth Menon, Uwe Kleine-König,
   Thomas Meyer).

 - Get rid of code duplication by using the DEFINE_SHOW_ATTRIBUTE
   macro in some places, fix some DT node refcount leaks, and do
   some other janitorial cleanups (Yangtao Li).

 - Update the cpupower, intel_pstate_tracer and turbosat utilities
   (Abhishek Goel, Doug Smythies, Len Brown).

GPIO fixes for v4.20:
- ACPI IRQ request deferral
- OMAP: revert deferred wakeup quirk
- MAX7301: fix DMA safe memory handling
- MVEBU: selective probe failure on missing clk

wireless-drivers-next patches for 4.21

Last set of patches for 4.21. mt76 is still in very active development
and having some refactoring as well as new features. But also other
drivers got few new features and fixes.

Major changes:

ath10k

* add amsdu support for QCA6174 monitor mode

* report tx rate using the new ieee80211_tx_rate_update() API

* wcn3990 support is not experimental anymore

iwlwifi

* support for FW version 43 for 9000 and 22000 series

brcmfmac

* add support for CYW43012 SDIO chipset

* add the raw 4354 PCIe device ID for unprogrammed Cypress boards

mwifiex

* add NL80211_STA_INFO_RX_BITRATE support

mt76

* use the same firmware for mt76x2e and mt76x2u

* mt76x0e survey support

* more unification between mt76x2 and mt76x0

* mt76x0e AP mode support

* mt76x0e DFS support

* rework and fix tx status handling for mt76x0 and mt76x2

media fixes for v4.20-rc8

media fixes for v4.20-rc8

sound updates for 4.21

There are no intensive changes in both ALSA and ASoC core parts while
rather most of changes are a bunch of driver fixes and updates.
A large diff pattern appears in ASoC TI part which now merges both
OMAP and DaVinci stuff, but the rest spreads allover the places.

Note that this pull request includes also some updates for LED trigger
and platform drivers for mute LEDs, appearing in the diffstat as well.

Some highlights:

ASoC:
- Preparatory work for merging the audio-graph and audio-graph-scu
  cards
- A merge of TI OMAP and DaVinci directories, as both product lines
  get merged together.  Also including a few architecture changes as
  well.
- Major cleanups of the Maxim MAX9867 driver
- Small fixes for tablets & co with Intel BYT/CHT chips
- Lots of rsnd updates as usual
- Support for Asahi Kaesi AKM4118, AMD ACP3x, Intel platforms with
  RT5660, Meson AXG S/PDIF inputs, several Qualcomm IPs and Xilinx I2S
  controllers

HD-audio:
- Introduce audio-mute LED trigger for replacing the former hackish
  dynamic binding
- Huawei WMI hotkey and mute LED support
- Refactoring of PM code and display power controls
- Headset button support in the generic jack code
- A few updates for Tegra
- Fixups for HP EliteBook and ASUS UX391UA
- Lots of updates for Intel ASoC HD-audio, including the improved DSP
  detection and the fallback binding from ASoC SST to legacy HD-audio
  controller drivers

Others:
- Updates for FireWire TASCAM and Fireface devices, some other fixes
- A few potential Spectre v1 fixes that are all trivial

This is the 4.19.11 stable release

wireless-drivers fixes for 4.20

Last set of fixes for 4.20. All (except the mt76 fix) of these are
important fixes to user reported problems and pretty small in size.

rtlwifi

* fix skb leak

mwifiex

* revert a commit from v4.19 due to problems with locking

mt76

* fix a potential NULL derenfence

* add entry to MAINTAINERS

iwlwifi

* fix a firmware crash which was a regression introduced in v4.20-rc4

ath10k

* fix a firmware crash with wcn3990 firmware

Allwinner arm64 DT changes for 4.21 - round 2

Bluetooth using a Broadcom (now Cypress) chip connected to an UART on
the Bananapi M64 is enabled using serdev and the updated bindings for
Broadcom Bluetooth. The patch series had been sitting on the mailing
lists for a month, and the driver bits were just merged on 2018/12/19.

Allwinner DT changes for 4.21 - round 2

This is a small pull request for some lingering things that didn't make
the first round of patches.

First, the new suniv device tree included device tree headers for the
clock and reset indices. These header filers are going in through the
clock tree. Thus with the dt and core branches in arm-soc alone, it
doesn't build. One fix is included to remove the #include statements.
The defined macros aren't used yet as they were properly removed during
the review phase.

Second, Bluetooth using Broadcom (now Cypress) chips connected to UARTs
on various boards is enabled using serdev and the updated bindings for
Broadcom Bluetooth. The patch series had been sitting on the mailing
lists for a month, and the driver bits were just merged on 2018/12/19.

This time we have too many changes to list, highlights:
 * virt_wifi - wireless control simulation on top of
   another network interface
 * hwsim configurability to test capabilities similar
   to real hardware
 * various mesh improvements
 * various radiotap vendor data fixes in mac80211
 * finally the nl_set_extack_cookie_u64() we talked
   about previously, used for
 * peer measurement APIs, right now only with FTM
   (flight time measurement) for location
 * made nl80211 radio/interface announcements more complete
 * various new HE (802.11ax) things:
   updates, TWT support, ...