[M] Change in coreboot[main]: mb/google/brox/var/lotso: Update cpu power limits

[Jian Tong (Code Review)]

Attention is currently required from: Dengwu Yu, Karthik Ramasubramanian, Kun Liu, Subrata Banik, wen zhang.

Hello Dengwu Yu, Karthik Ramasubramanian, Kun Liu, Subrata Banik, build bot (Jenkins), wen zhang,

I'd like you to reexamine a change. Please visit

https://review.coreboot.org/c/coreboot/+/84202?usp=email

to look at the new patch set (#6).

Change subject: mb/google/brox/var/lotso: Update cpu power limits
......................................................................

mb/google/brox/var/lotso: Update cpu power limits

When battery not persent, limit PL4 to 40.
Base on: https://review.coreboot.org/c/coreboot/+/83752

AC+DC/DC:
PL1=15W
PL2=25W
PL4=114W

AC ONLY:
PL1=15W
PL2=25W
PL4=40W

BUG=b:355094551
TEST=emerge-brox sys-boot/coreboot sys-boot/chromeos-bootimage

Change-Id: I5848c776399a1bdc455db604bb3b22d16f6b2928
Signed-off-by: Jian Tong 
---
M src/mainboard/google/brox/Kconfig
M src/mainboard/google/brox/variants/lotso/Makefile.mk
M src/mainboard/google/brox/variants/lotso/overridetree.cb
A src/mainboard/google/brox/variants/lotso/ramstage.c
4 files changed, 47 insertions(+), 3 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/02/84202/6