Change in coreboot[master]: [WIP] vc/amd/fsp/cezanne: update UPD headers

[Nikolai Vyssotski (Code Review)]

Attention is currently required from: Raul Rangel, Furquan Shaikh, Paul Menzel, Matt Papageorge, Felix Held.
Nikolai Vyssotski has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/51806 )

Change subject: [WIP] vc/amd/fsp/cezanne: update UPD headers
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Patch Set 3:

(1 comment)

This change is ready for review.

Commit Message:

https://review.coreboot.org/c/coreboot/+/51806/comment/1b2ce623_9fc7bb17 
PS3, Line 13: TODO: move vbios_buffer and gop_reserved back to UPD-S and put back the
> Can we remove this? We ended up using the standard VBIOS location.

I would like to keep it if possible for two reasons. #1 it gives us flexibility to relocate it in the future. #2 currently it is used to communicated from CB to FSP that GOP driver is not used (if it is set to NULL).