[S] Change in coreboot[master]: mb/google/skryim: Add RECOVERY_MRC_CACHE FMAP section

[Felix Held (Code Review)]

Attention is currently required from: Jason Nien, Matt DeVillier, Jon Murphy, Martin Roth, Karthik Ramasubramanian.

Felix Held has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/73250 )

Change subject: mb/google/skryim: Add RECOVERY_MRC_CACHE FMAP section
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Patch Set 1:

(1 comment)

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

https://review.coreboot.org/c/coreboot/+/73250/comment/68c6ceb6_6bdef641 
PS1, Line 25: RECOVERY_MRC_CACHE
> would be good to have some numbers for read, write and erase speed to see if using 120k or 128k is f […]

for now, i'll submit the patch as it is and when we have data on this, this can be addressed. since the read is way more often used as an erase, i'd guess that the 120kbyte ends up saving us some small amount of time in the more common and critical paths