Linux 5.16 Preps More Display Code For Alder Lake P & DG2/Alchemist

In Linux 5.14 Intel introduced initial Alder Lake P enablement driver support including around the new "XeLPD" display block. With Linux 5.15 there was the initial enablement around DG2/Alchemist graphics. Now for Linux 5.16 is a significant amount of new driver code for actually getting the display support into shape for both DG2 and ADL-P...