[M] Change in coreboot[master]: mb/google/nissa/var/pirrha: Add GPIO table

[Derek Huang (Code Review)]

Attention is currently required from: SH Kim, Shou-Chieh Hsu, Tarun Tuli.

Derek Huang has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/76882?usp=email )

Change subject: mb/google/nissa/var/pirrha: Add GPIO table
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Patch Set 2:

(3 comments)

File src/mainboard/google/brya/variants/pirrha/Makefile.inc:

https://review.coreboot.org/c/coreboot/+/76882/comment/476697a9_75dda6be :
PS2, Line 4: romstage-y += gpio.c
This is not necessary as you don't override gpio in romstage

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

https://review.coreboot.org/c/coreboot/+/76882/comment/cd719346_09eec06d :
PS2, Line 99: static const struct pad_config romstage_gpio_table[] = {
            : };
Probably you don't need this table as it's empty

https://review.coreboot.org/c/coreboot/+/76882/comment/f8abfb9b_6612691c :
PS2, Line 115: const struct pad_config *variant_romstage_gpio_table(size_t *num)
             : {
             : 	*num = ARRAY_SIZE(romstage_gpio_table);
             : 	return romstage_gpio_table;
             : }
same as above.