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

[Karthik Ramasubramanian (Code Review)]

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

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

Change subject: soc/intel: GMA v2 for ADL, MTL, TGL to reflect port/pipe defs
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Patch Set 1: Code-Review+1