Change in coreboot[master]: mb/google/brya: Configure WWAN GPIO early

[Varshit B Pandya (Code Review)]

Attention is currently required from: Furquan Shaikh, Tim Wawrzynczak.
Varshit B Pandya has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/54912 )

Change subject: mb/google/brya: Configure WWAN GPIO early
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Patch Set 2:

(1 comment)

File src/mainboard/google/brya/variants/baseboard/gpio.c:

https://review.coreboot.org/c/coreboot/+/54912/comment/267e4747_0d483dae 
PS2, Line 396: DEEP
> There is an external PD on WWAN_PERST_L - R331. […]

actually I have tested this on L850 module and I dont see issue in warm reboot cycle even after removing PERST from early GPIOs, Eric suggested to add it for FM350 module, I dont have FM350 module 😞

Eric, can you please give this a try with FM350 with the suggested changes ?