[XS] Change in coreboot[main]: soc/intel: Select GMA v2 for ADL, MTL, TGL to reflect port/pipe defs

[Nick Vaccaro (Code Review)]

Attention is currently required from: Arthur Heymans, Eran Mitrani, Jakub Czapiga, Julius Werner, Kapil Porwal, Karthik Ramasubramanian, Lean Sheng Tan, Nick Vaccaro, Paul Menzel, Subrata Banik, Tarun, Werner Zeh.

Nick Vaccaro has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/78079?usp=email )

Change subject: soc/intel: Select GMA v2 for ADL, MTL, TGL to reflect port/pipe defs
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Patch Set 7: Code-Review+2