Change in coreboot[master]: soc/intel/common: add generic gpio lock mechanism

[Karthik Ramasubramanian (Code Review)]

Attention is currently required from: Furquan Shaikh, Tim Wawrzynczak, Nick Vaccaro, Patrick Rudolph.
Karthik Ramasubramanian has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/58351 )

Change subject: soc/intel/common: add generic gpio lock mechanism
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Patch Set 3:

(2 comments)

File src/soc/intel/common/block/gpio/gpio.c:

https://review.coreboot.org/c/coreboot/+/58351/comment/74a82bf3_641727ac 
PS3, Line 473: 
Nit: Extra line can be removed.

https://review.coreboot.org/c/coreboot/+/58351/comment/71d7d471_81d6e22d 
PS3, Line 561: int gpio_lock_pad(const gpio_t pad, enum gpio_lock_action action)
Can the function body be replaced as:

gpio_lock_multiple_pads(pad_a, 1, NULL, 0);