[S] Change in coreboot[main]: soc/intel/mtl: Hook up GMA ACPI brightness controls

[Tim Crawford (Code Review)]

Attention is currently required from: Dinesh Gehlot, Eran Mitrani, Jakub Czapiga, Kapil Porwal, Subrata Banik, Tarun.

Tim Crawford has posted comments on this change by Tim Crawford. ( https://review.coreboot.org/c/coreboot/+/82729?usp=email )

Change subject: soc/intel/mtl: Hook up GMA ACPI brightness controls
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Patch Set 3:

(1 comment)

File src/soc/intel/meteorlake/Kconfig:

https://review.coreboot.org/c/coreboot/+/82729/comment/57153a27_049d8556?usp... :
PS2, Line 398: INTEL_GMA_BCLV_OFFSET
> It's used in the defalt ASL code, and technically already hooked up :)  […]

Done