[XS] Change in coreboot[main]: mb/google/brox: Increase PL1 Min and remove PL4 modification

[Sumeet R.P. (Code Review)]

Attention is currently required from: Karthik Ramasubramanian, Paul Menzel, Shelley Chen, Sowmya Aralguppe, Subrata Banik.

Sumeet R.P. has posted comments on this change by Sowmya Aralguppe. ( https://review.coreboot.org/c/coreboot/+/84185?usp=email )

Change subject: mb/google/brox: Increase PL1 Min and remove PL4 modification
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Patch Set 4:

(1 comment)

Patchset:

PS4: 
This patch is the same of earlier patches submitted for review https://review.coreboot.org/c/coreboot/+/83661 and https://review.coreboot.org/c/coreboot/+/83662

I would request to consider these above two patches to consider and take it forward for merge instead of this patch.