soc/intel/common: Hook up GMA ACPI brightness controls

Add framework to hook up the generic src/drivers/intel/gma ACPI
backlight control for platforms using SOC_INTEL_COMMON_BLOCK_GRAPHICS.
Add a weak function to get the struct i915_gpu_controller_info needed
to generate the SSDT, defaulting to NULL, which SoC's will override.

Each SoC will need to override intel_igd_get_controller_info, and
individual boards will need to populate the struct in order for
the backlight control methods to be added to the SSDT.

Change-Id: I993770fdcd0a28cee756df2bd6a795498f175952
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/32549
Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

0 files changed, 0 insertions, 0 deletions