[S] Change in coreboot[main]: mb/google/brox: Create lotso variant

[Kun Liu (Code Review)]

Attention is currently required from: Jian Tong, Karthik Ramasubramanian, Shelley Chen.

Kun Liu has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/81817?usp=email )

Change subject: mb/google/brox: Create lotso variant
......................................................................

Patch Set 6:

(2 comments)

File src/mainboard/google/brox/variants/lotso/gpio.c:

https://review.coreboot.org/c/coreboot/+/81817/comment/e21ca413_83d231ab :
PS5, Line 9: const struct pad_config *variant_gpio_table(size_t *num)
           : {
           : 	*num = 0;
           : 	return NULL;
           : }
           : 
           : const struct pad_config *variant_early_gpio_table(size_t *num)
           : {
           : 	*num = 0;
           : 	return NULL;
           : }
> I think that you don't need these override functions if they are just empty?

Done

https://review.coreboot.org/c/coreboot/+/81817/comment/9a46898d_074d381e :
PS5, Line 26: const struct pad_config *variant_romstage_gpio_table(size_t *num)
            : {
            : 	*num = 0;
            : 	return NULL;
            : }
            :
> same here?

Done