[XS] Change in coreboot[main]: mb/google/rex: Fix ISH I2C pad for suspend

[Cliff Huang (Code Review)]

Attention is currently required from: Bora Guvendik, Cliff Huang, Eran Mitrani, Jakub Czapiga, Kapil Porwal, Tarun.

Hello Bora Guvendik, Eran Mitrani, Jakub Czapiga, Kapil Porwal, Li1 Feng, Subrata Banik, Tarun,

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

https://review.coreboot.org/c/coreboot/+/78179?usp=email

to look at the new patch set (#4).

Change subject: mb/google/rex: Fix ISH I2C pad for suspend
......................................................................

mb/google/rex: Fix ISH I2C pad for suspend

During suspend, the ISH I2C transactions cannot go through
because the GPIO pads remain the pervious value.
The IO Standby State (IOSSTATE) needs to be changed to keep I2C bus
active and functional during suspend.

BUG=b:302612549
TEST=on Google/rex platform with ISH enabled, do suspend_stress_test
and check that no i2c failure.

Signed-off-by: Cliff Huang 
Change-Id: I9a2c902ed56461f3a535428db399c2050756f2da
---
M src/mainboard/google/rex/variants/rex0/fw_config.c
1 file changed, 2 insertions(+), 2 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/79/78179/4