[S] Change in coreboot[master]: mb/google/skyrim/var/winterhold: Add gpio override settings

[Raul Rangel (Code Review)]

Attention is currently required from: Jason Nien, EricKY Cheng, Martin Roth, Karthikeyan Ramasubramanian.

Raul Rangel has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/67209 )

Change subject: mb/google/skyrim/var/winterhold: Add gpio override settings
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Patch Set 4:

(3 comments)

File src/mainboard/google/skyrim/variants/winterhold/gpio.c:

https://review.coreboot.org/c/coreboot/+/67209/comment/d6259396_c14c6932 
PS4, Line 10: // NC
Remove these extra comments. The PAD_NC already makes it clear

https://review.coreboot.org/c/coreboot/+/67209/comment/81818e82_6d167530 
PS4, Line 22: /* CLK_REQ1_L / EMMC */
How about this?

https://review.coreboot.org/c/coreboot/+/67209/comment/b5681c41_8949e17e 
PS4, Line 25: __weak
You don't want to make this weak