Change in coreboot[master]: mb/google/brya: Disable c1-state auto demotion for Brya & Brask

[Vinay Kumar (Code Review)]

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

Change subject: mb/google/brya: Disable c1-state auto demotion for Brya & Brask
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Patch Set 9:

(1 comment)

Commit Message:

https://review.coreboot.org/c/coreboot/+/62630/comment/c7df8b85_fbef69b2 
PS5, Line 13: disabling this feature results in 110 mW power savings
> Yes Subrata, as per my understanding it would not have impact in case of Balanced power/performance  […]

Hi Subrata,

Yes your observation from previous generations is correct. But in ADLP this feature is not working as expected and hence needs to be disabled to avoid PnP impact. We found that C1stateAutodemotion feature is not supported for ADLP SKUs, so default option is for it to be disabled. Hence keeping it disabled.

BR,
-Vinay