Merge tag 'scpi-updates-4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep...

SCPI updates and fixes for v4.8

1. Adds support for device power state management using generic power
   domains and runtime PM

2. Other minor/miscellaneous fixes to the driver

* tag 'scpi-updates-4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux:
  firmware: scpi: add device power domain support using genpd
  Documentation: add DT bindings for ARM SCPI power domains
  firmware: arm_scpi: add support for device power state management
  firmware: arm_scpi: make it depend on MAILBOX instead of ARM_MHU
  firmware: arm_scpi: mark scpi_get_sensor_value as static
  firmware: arm_scpi: remove dvfs_get packed structure

Signed-off-by: Olof Johansson <olof@lixom.net>