[S] Change in coreboot[master]: mb/google/nissa/var/craask: Modify clkreq to clksrc mapping

[Ren Kuo (Code Review)]

Attention is currently required from: David Wu, Tarun Tuli, Henry Sun, Kangheui Won, Tyler Wang, Eric Lai.

Ren Kuo has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/72051 )

Change subject: mb/google/nissa/var/craask: Modify clkreq to clksrc mapping
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Patch Set 4: Code-Review+1

(1 comment)

File src/mainboard/google/brya/variants/craask/overridetree.cb:

https://review.coreboot.org/c/coreboot/+/72051/comment/e812803e_5d16e818 
PS3, Line 448: 			# Setting clk_src=2 and clk_req=2 in coreboot,and swap to clk_src=1,clk_req=2 in mFIT
> Can you clarify in the comment - "Due to inconsistency between PMC firmware and FSP, we need to set  […]

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