[M] Change in coreboot[master]: mb/google/myst: Enable AP <-> GSC communication

[Jon Murphy (Code Review)]

Attention is currently required from: Raul Rangel, Tim Van Patten, Karthik Ramasubramanian, Mark Hasemeyer.

Jon Murphy has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/74111 )

Change subject: mb/google/myst: Enable AP <-> GSC communication
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Patch Set 18:

(1 comment)

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

https://review.coreboot.org/c/coreboot/+/74111/comment/a9aa546d_d686cd32 
PS16, Line 219: __weak void variant_espi_gpio_table(const struct soc_amd_gpio **gpio, size_t *size)
              : {
              : 	*size = ARRAY_SIZE(espi_gpio_table);
              : 	*gpio = espi_gpio_table;
              : __weak void variant_tpm_gpio_table(const struct soc_amd_gpio **gpio, size_t *size)
              : {
              : 	*size = ARRAY_SIZE(tpm_gpio_table);
              : 	*gpio = tpm_gpio_table;
              : }
> Bad merge here.

Done