[XS] Change in coreboot[main]: soc/intel/mtl: Set HDA subsystem ID during FSP-M

[Paul Menzel (Code Review)]

Attention is currently required from: Dinesh Gehlot, Eran Mitrani, Jakub Czapiga, Kapil Porwal, Tarun, Tim Crawford.

Paul Menzel has posted comments on this change by Tim Crawford. ( https://review.coreboot.org/c/coreboot/+/82731?usp=email )

Change subject: soc/intel/mtl: Set HDA subsystem ID during FSP-M
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Patch Set 2:

(2 comments)

Commit Message:

https://review.coreboot.org/c/coreboot/+/82731/comment/bf1147f3_2b3225a2?usp... :
PS2, Line 9: Intel introduced a new UPD
If you know the FSP(?) version, please add it, or document, what version you used.

https://review.coreboot.org/c/coreboot/+/82731/comment/cb29ba5a_065c9474?usp... :
PS2, Line 12: 
Please add TEST=.