[S] Change in coreboot[main]: mb/trulo/var/uldrenite: Fix boot time caused by WWAN initialization

[Subrata Banik (Code Review)]

Attention is currently required from: Dinesh Gehlot, Dtrain Hsu, Eric Lai, Jayvik Desai, John Su, Kapil Porwal, Nick Vaccaro.

Subrata Banik has posted comments on this change by John Su. ( https://review.coreboot.org/c/coreboot/+/86514?usp=email )

Change subject: mb/trulo/var/uldrenite: Fix boot time caused by WWAN initialization
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Patch Set 6:

(2 comments)

Commit Message:

https://review.coreboot.org/c/coreboot/+/86514/comment/815ab3c0_c6d15984?usp... :
PS6, Line 11: 
can you please highlight that you have add 150ms delay before powering off the WWAN?

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

https://review.coreboot.org/c/coreboot/+/86514/comment/b756835b_f71d3faf?usp... :
PS6, Line 236: 	/* F13 : NC ==> PLTRST_WWAN# */
             : 	PAD_CFG_GPO(GPP_F13, 1, DEEP),
can u move this into romstage as well ?

then you don't need to reconfigure the same GPIOs in ramstage