More power management and ACPI fixes for v4.5-rc2 - Fix a recent cpuidle core regression that broke suspend-to-idle on all systems where cpuidle drivers don't provide ->enter_freeze callbacks for any states (Sudeep Holla). - Drop an unnecessary symbol definition from the cpuidle core code handling coupled CPU cores (Anders Roxell). - Fix a race condition related to governor initialization and removal in the cpufreq core (Viresh Kumar). - Clean up the cpufreq core to use list_is_last() for checking if the given policy object is the last element of a list instead of open coding that in a clumsy way (Gautham R Shenoy). - Fix compiler warnings in the pxa2xx and cpufreq-dt cpufreq drivers (Arnd Bergmann). - Fix two locking issues and clean up a comment in the generic power domains framework (Ulf Hansson, Marek Szyprowski, Moritz Fischer). - Fix the error code path of one function in the ACPI-based PCI hotplug framework (ACPIPHP) that forgets to release a lock acquired previously (Insu Yun). - Drop the ACPI backlight blacklist entry for Dell Inspiron 5737 that is not necessary any more (Hans de Goede). - Clean up the top-level PM Kconfig to stop requiring APM emulation to depend on PM which in fact isn't necessary (Arnd Bergmann). /