[M] Change in coreboot[main]: mb/google/brox: Fix booting to kernel without battery

[Sowmya Aralguppe (Code Review)]

Attention is currently required from: Ashish Kumar Mishra, Caveh Jalali, Dinesh Gehlot, Eric Herrmann, Forest Mittelberg, Jayvik Desai, Kapil Porwal, Karthik Ramasubramanian, Keith Short, Krishna P Bhat D, Nick Vaccaro, Paul Menzel, Rishika Raj, Ronak Kanabar, Shelley Chen, Sowmya Aralguppe, Subrata Banik.

Sowmya Aralguppe has posted comments on this change by Sowmya Aralguppe. ( https://review.coreboot.org/c/coreboot/+/83752?usp=email )

Change subject: mb/google/brox: Fix booting to kernel without battery
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Patch Set 19:

(1 comment)

File src/mainboard/google/brox/variants/baseboard/brox/ramstage.c:

https://review.coreboot.org/c/coreboot/+/83752/comment/f036d90c_544ffc50?usp... :
PS19, Line 57:  * PL4 calculations - For USB C charger (Max Power):
> > I am referring PL4 writeback in depthcharge not in the kernel. […]

I was able to write it in depthcharge for an older version of the kernel .
Writing in the OS will add complexity since we need to pass the info that the pl4 has been reduced and based on that it should increase .
The problem statement and ARs were discussed in the Brox call and a partner bug was raised - https://partnerissuetracker.corp.google.com/issues/362371596