[M] Change in coreboot[main]: drivers/intel/gma/opregion: Use CBFS cache to load VBT

[Nico Huber (Code Review)]

Attention is currently required from: Arthur Heymans, Eran Mitrani, Jakub Czapiga, Jérémy Compostella, Kapil Porwal, Nick Vaccaro, Tarun.

Nico Huber has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/77886?usp=email )

Change subject: drivers/intel/gma/opregion: Use CBFS cache to load VBT
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Patch Set 33:

(1 comment)

File src/drivers/intel/gma/opregion.c:

https://review.coreboot.org/c/coreboot/+/77886/comment/e661bfc8_a00f66ee :
PS4, Line 27: cbfs_map
> I find this quite confusing. The way you describe it, I see no difference to […]

NB. Looking at the code below and the history of the static array, it
looks like it was never necessary. We eventually copy the VBT to CBMEM
anyway. So there shouldn't be a need to map twice. Probably just a
shortcut that was taken when adding FSP/GOP support.