Change in coreboot[master]: mb/google/brya: Configure SIM detect GPIO with 20k pull up

[Varshit B Pandya (Code Review)]

Attention is currently required from: Furquan Shaikh, Paul Menzel, Tim Wawrzynczak, Rizwan Qureshi, EricR Lai.
Varshit B Pandya has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/55349 )

Change subject: mb/google/brya: Configure SIM detect GPIO with 20k pull up
......................................................................

Patch Set 2:

(4 comments)

Commit Message:

https://review.coreboot.org/c/coreboot/+/55349/comment/b9d15723_ea401f96 
PS1, Line 7: 20k pull up
> Can you please add the motivation behind why this is required?

Done

https://review.coreboot.org/c/coreboot/+/55349/comment/cac2a235_32101b44 
PS1, Line 8:
> Please mention the source, for example schematics.

Done

Patchset:

PS1:
> I think we will remove this pin in P2?

Yes, Eric this will be removed, since P2 build will take some time to arrive physically, need this patch to unblock the WWAN enablement

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

https://review.coreboot.org/c/coreboot/+/55349/comment/90e0d64f_ffcc3b14 
PS1, Line 249: GPP_F19
> This SIM detect pin was never meant to be connected to the PCH, but it is, and it's also missing a p […]

Can we configure F19 with Pull up and remove it when we have P2 boards ?
I believe it will take some time to get P2 boards