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

[EricR Lai (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, Peter Marheine.
EricR Lai has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/51669 )

Change subject: mb/google/zork/vilboz: Adjust eDP PHY driving to improve WWAN noise
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Patch Set 4:

(1 comment)

File src/mainboard/google/zork/variants/vilboz/variant.c:

https://review.coreboot.org/c/coreboot/+/51669/comment/196fe2b3_3a14b73f 
PS2, Line 31: variant_override_edp_tuningset()
> Because the return value of this function is not "yes" or "no", but 0~3 for different settings, you  […]

We can change to case switch if needed or we can leave ==1 here and write some comment on it. WDYT?