[M] Change in coreboot[master]: mb/google/myst: Add new mainboard

[Felix Held (Code Review)]

Attention is currently required from: Raul Rangel, Martin L Roth, Jon Murphy, Eric Lai, Martin Roth, Fred Reitberger, Tim Van Patten, Karthik Ramasubramanian, Mark Hasemeyer.

Felix Held has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/74093 )

Change subject: mb/google/myst: Add new mainboard
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Patch Set 3:

(2 comments)

File src/mainboard/google/myst/chromeos.fmd:

https://review.coreboot.org/c/coreboot/+/74093/comment/1633321a_e4198631 
PS3, Line 36: }
> Fred/Martin, […]

sent you some code to have a look at. haven't had the time to really look into this whole topic yet

File src/mainboard/google/myst/dsdt.asl:

https://review.coreboot.org/c/coreboot/+/74093/comment/b9a0ccb9_8e970279 
PS2, Line 16: 	Name(LIDS, 0)
> Done

i'd say that it would be good if that was moved to the EC's acpi code to which this belongs, but that depends on some rework on the intel soc side which i'm not planning to do