[M] Change in coreboot[main]: mb/google/brox: Fix memory config

[Shelley Chen (Code Review)]

Shelley Chen has uploaded a new patch set (#3). ( https://review.coreboot.org/c/coreboot/+/79355?usp=email )

Change subject: mb/google/brox: Fix memory config
......................................................................

mb/google/brox: Fix memory config

Fix up the memory config for brox based on the schematics.  Also,
since memory training needs to happen in romstage, initializing the
MEM_STRAP & MEM_CH_SEL gpios for use in romstage.

BUG=b:300690448
BRANCH=None
TEST=emerge-brox coreboot

Change-Id: I17615cda7df10e73e49fb49f736728787ef7625d
Signed-off-by: Shelley Chen 
---
M src/mainboard/google/brox/variants/baseboard/brox/gpio.c
M src/mainboard/google/brox/variants/baseboard/brox/memory.c
2 files changed, 58 insertions(+), 45 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/55/79355/3