Change in coreboot[master]: mb/google/brya: Disable C state auto demotion for Brya & Brask

[Maulik V Vaghela (Code Review)]

Attention is currently required from: Subrata Banik, Tim Wawrzynczak.
Maulik V Vaghela has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/62630 )

Change subject: mb/google/brya: Disable C state auto demotion for Brya & Brask
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Patch Set 5:

(1 comment)

Commit Message:

https://review.coreboot.org/c/coreboot/+/62630/comment/7535c654_1998512c 
PS5, Line 13: disabling this feature results in 110 mW power savings
> In general, deeper C-states such as C6 have long latencies and have higher energy entry/exit costs. […]

Yes Subrata, Performance impact has been measured using the CL (disabling autodemotion) and there is no negative impact on performance. 
@Vinay can help in commenting further.