[M] Change in coreboot[master]: drivers/intel/gma: Hook up libgfxinit in romstage

[Angel Pons (Code Review)]

Attention is currently required from: Bora Guvendik, Zhixing Ma, Anil Kumar K, Hannah Williams, Cliff Huang, Nico Huber, Michał Żygowski, Subrata Banik, Jérémy Compostella, Paul Menzel, Arthur Heymans.

Angel Pons has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/70276 )

Change subject: drivers/intel/gma: Hook up libgfxinit in romstage
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Patch Set 15:

(1 comment)

File src/drivers/intel/gma/Kconfig:

https://review.coreboot.org/c/coreboot/+/70276/comment/c982bb15_9be6102c 
PS15, Line 105: If
              : 	  libgfxinit is used for both romstage and ramstage this
              : 	  address should be the same than the one allocated by the PCI
              : 	  resource allocator in ramstage.
Hmmm, can't romstage libgfxinit use a predefined address, and then have ramstage libgfxinit use the address programmed by the allocator? If libgfxinit reads the base addresses from the hardware registers, it might be easier to program the BARs in coreboot before calling libgfxinit.