Change in coreboot[master]: soc/intel/graphics: Add override api for graphics_get_memory_base()

[Ethan Tsao (Code Review)]

Attention is currently required from: Subrata Banik, Ravishankar Sarawadi, Tim Wawrzynczak, Paul Menzel, Raj Astekar, Patrick Rudolph.
Ethan Tsao has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/61389 )

Change subject: soc/intel/graphics: Add override api for graphics_get_memory_base()
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Patch Set 6:

(2 comments)

File src/soc/intel/common/Kconfig.common:

PS6:
> Should this go in`src/soc/intel/common/block/graphics/Kconfig` instead?

Thanks reminding. I will move to graphics specific Kconfig.

https://review.coreboot.org/c/coreboot/+/61389/comment/8213eddb_44e13362 
PS6, Line 97:  "Enable override for Intel graphic_get_memory_base"
> We don't want this option to be displayed by the user, it is not supposed to be user-selectable, jus […]

Okay, I will remove it.