Change in coreboot[master]: mb/google/zork/vilboz: Adjust eDP PHY driving to improve WWAN noise

[John Su (Code Review)]

Attention is currently required from: Frank Wu, John Su, Martin Roth, Furquan Shaikh, Kangheui Won, Isaac Lee, Chris Wang, Rob Barnes, chris wang.
Hello Frank Wu, build bot (Jenkins), Martin Roth, Furquan Shaikh, Kangheui Won, Isaac Lee, Chris Wang, Rob Barnes, chris wang, EricR Lai,

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

https://review.coreboot.org/c/coreboot/+/51669

to look at the new patch set (#2).

Change subject: mb/google/zork/vilboz: Adjust eDP PHY driving to improve WWAN noise
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mb/google/zork/vilboz: Adjust eDP PHY driving to improve WWAN noise

Only panel swing level = 1 impact WWAN noise, so remove original
settings in device tree. Then we use fw_config to override eDP tuningset
for improve WWAN noise.

BUG=b:171269338
BRANCH=firmware-zork-13434.B
TEST=emerge-zork coreboot chromeos-bootimage

Signed-off-by: John Su 
Change-Id: I8c78c85783d16f3afa1718a3bf41efe9eb121860
---
M src/mainboard/google/zork/variants/baseboard/helpers.c
M src/mainboard/google/zork/variants/baseboard/include/baseboard/variants.h
M src/mainboard/google/zork/variants/vilboz/overridetree.cb
M src/mainboard/google/zork/variants/vilboz/variant.c
4 files changed, 28 insertions(+), 13 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/69/51669/2