Change in coreboot[master]: [RFC] ChromeOS: Use CHROMEOS_NVS guard

[Aaron Durbin (Code Review)]

Attention is currently required from: Lance Zhao, Furquan Shaikh, Martin Roth, Duncan Laurie, Kyösti Mälkki, Patrick Rudolph.
Aaron Durbin has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/50611 )

Change subject: [RFC] ChromeOS: Use CHROMEOS_NVS guard
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Patch Set 4:

(2 comments)

Patchset:

PS3:
> CB:49477 changed how OperationRegion is declared. […]

Thanks for the pointer. Very helpful.

Patchset:

PS4: 
I guess we should just get the subject and commit descriptions sorted out for the patch series.