[coreboot-gerrit] Change in coreboot[master]: soc/intel/gma: Move display and opregion init to common code

[Matt DeVillier (Code Review)]

Matt DeVillier has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/40725 )

Change subject: soc/intel/gma: Move display and opregion init to common code
......................................................................

Patch Set 2: Code-Review+1

tested ok on google/chell (SKL)