Change in coreboot[master]: mb/google/brya/var/primus{4es}: modify GPP_B3 as unlocked

[Casper Chang (Code Review)]

Attention is currently required from: Terry Chen, Malik Hsu, Tim Wawrzynczak, Casper Chang.
Hello build bot (Jenkins), Subrata Banik, Terry Chen, Malik Hsu, Tim Wawrzynczak, EricR Lai,

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

https://review.coreboot.org/c/coreboot/+/62465

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

Change subject: mb/google/brya/var/primus{4es}: modify GPP_B3 as unlocked
......................................................................

mb/google/brya/var/primus{4es}: modify GPP_B3 as unlocked

With GPP_B3 locked, primus eMMC SKU encounter eMMC storage lost after
warm reboot.
Config GPP_B3 unlocked to make reboot works on primus. Also set
GPP_B3 to low in early_gpio_table to meet eMMC-PCIe bridge IC power
on sequence.

BUG=b:221488504
TEST=USE="project_primus" emerge-brya coreboo chromeos-bootimage
     test reboot 30 cycles passed on primus.

Signed-off-by: Casper Chang 
Change-Id: Ifd5f9d59d33cd1c5ebe0454ab3aa4c5641c16ff6
---
M src/mainboard/google/brya/variants/primus/gpio.c
M src/mainboard/google/brya/variants/primus4es/gpio.c
2 files changed, 6 insertions(+), 2 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/65/62465/6