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ACPI updates for 5.6-rc1

 - Update the ACPICA code in the kernel to upstream revision
   20200110 including:

   * Update of copyright notices to 2020 (Bob Moore).

   * Dispatcher fix to always generate buffer objects for the ASL
     create_field() operator (Maximilian Luz).

   * Debugger cleanup (Colin Ian King).

   * Disassembler change to create buffer fields in
     ACPI_PARSE_LOAD_PASS1 (Erik Kaneda).

   * UNIX line ending support for non-windows builds in acpisrc
     (Erik Kaneda).

 - Update the list of ACPICA maintainers (Rafael Wysocki).

 - Add Intel Tiger Lake ACPI device IDs to the ACPI DPTF, ACPI fan,
   int340x_thermal and intel-hid drivers (Gayatri Kammela).

 - Make the ACPI fan driver create additional sysfs attributes to
   expose power states information for fans (Srinivas Pandruvada).

 - Fix up the ACPI battery driver to deal with unexpected battery
   capacity information in a better way (Hans de Goede).

 - Add ACPI backlight quirks for Lenovo E41-25/45 and MSI MS-7721
   boards (Aaron Ma, Hans de Goede).

 - Add DMI quirk for Razer Blade Stealth 13 late 2019 lid switch
   to the ACPI button driver (Jason Ekstrand).

 - Drop TIMER_DEFERRABLE from the GHES polling mode timer function
   flags to make it run precisely at the configured time (Bhaskar
   Upadhaya).

 - Fix race condition related to the reference counting of query
   handlers in the ACPI EC driver (Rafael Wysocki).

 - Fix ACPI tools build issue (Zhengyuan Liu).

 - Replace dma_request_slave_channel() with dma_request_chan() in the
   firmware guide documentation for ACPI (Peter Ujfalusi).

 - Fix typo in a comment and clean up function parameter data type
   inconsistencies (Kacper Piwiński, Tian Tao).