Change in coreboot[master]: mb/google/brya/variants/primus: set up gpio

[Tim Wawrzynczak (Code Review)]

Attention is currently required from: Malik Hsu.
Tim Wawrzynczak has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/55404 )

Change subject: mb/google/brya/variants/primus: set up gpio
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Patch Set 1:

(5 comments)

Patchset:

PS1: 
Latest schematics I found was 20210607B, is that accurate?

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

https://review.coreboot.org/c/coreboot/+/55404/comment/90acb3e1_fae2f1d4 
PS1, Line 24: 
What about GPP_C3, GPP_C4 ?

https://review.coreboot.org/c/coreboot/+/55404/comment/19132afd_976f932f 
PS1, Line 29: 	/* D6  : SRCCLKREQ1# ==> WWAN_SIM1_DET_ODL */
Isn't this NC?

https://review.coreboot.org/c/coreboot/+/55404/comment/056dec75_f6cd31fb 
PS1, Line 40: 
GPP_E10, GPP_E17?

https://review.coreboot.org/c/coreboot/+/55404/comment/069e4821_46772143 
PS1, Line 50: 
GPP_H21?