Merge branches 'acpica' and 'acpi-thermal'

Merge ACPICA updates and ACPI thermal control updates for 7.4:

 - Add IOVT IOMMU support to ACPICA (Bibo Mao)

 - Fix PCC OperationRegion command offsets in ACPICA (Sudeep Holla)

 - Fix memory leak in acpi_ds_create_field() related to the handling of
   internal_pcc_buffer allocations (Breno Leitao)

 - Fix memory leak due to leftover devm_kcalloc() argument in the ACPI
   fan driver (Rafael Wysocki)

 - Fix backlight unregistration ordering in the ACPI video bus device
   driver (Rafael Wysocki)

 - Update the thermal core to allow the registration of thermal class
   cooling devices under specific parents and convert the ACPI fan,
   ACPI processor, and ACPI video bus device drivers to do so (Rafael
   Wysocki)

 - Adjust the ACPI thermal zone driver to use thermal class cooling
   device parent information for binding cooling devices to trip points
   in thermal zones (Rafael Wysocki)

 - Use cooling device data that is a better match for a given driver
   instread of a struct acpi_device pointer that had to be used for
   this purpose previously in the ACPI fan and processor drivers (Rafael
   Wysocki)

 - Fix acpi_thermal_guess_offset() in the ACPI thermal zone driver for
   thermal zone devices with a 273.0°K offset (Hans de Goede)

 - Define a free for ACPI objects allocated by ACPICA helpers and use
   it to simplify AML error handling in the ACPI fan driver (Rafael
   Wysocki)

* acpica:
  ACPICA: actbl2.h: Add bit constants of the Flags field in the IOVT IOMMU structure
  ACPICA: Fix PCC OperationRegion command offsets
  ACPICA: Fix memory leak in acpi_ds_create_field()

* acpi-thermal:
  ACPI: fan: Use __free() to simplify AML error handling
  ACPI: thermal: Fix acpi_thermal_guess_offset() for device with a 273.0°K offset
  ACPI: fan: Use more suitable cooling device data
  ACPI: fan: Store ACPI device pointer in struct acpi_fan
  ACPI: processor: thermal: Use more suitable cooling device data
  ACPI: thermal: Use cooling device parent for thermal zone binding
  ACPI: fan: Use thermal_cooling_device_create()
  ACPI: video: Use thermal_cooling_device_create()
  ACPI: processor: thermal: Use thermal_cooling_device_create()
  thermal: core: Introduce thermal_cooling_device_create()
  ACPI: video: Fix backlight unregistration ordering
  ACPI: fan: Fix memory leak due to leftover devm_kcalloc() argument