Change in coreboot[master]: mb/google/guybrush: Add variant_espi_gpio_table

[Karthik Ramasubramanian (Code Review)]

Attention is currently required from: Jason Glenesk, Marshall Dawson, Kangheui Won, Julius Werner, Rob Barnes, Yu-Ping Wu, Felix Held.
Karthik Ramasubramanian has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/59082 )

Change subject: mb/google/guybrush: Add variant_espi_gpio_table
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Patch Set 4:

(1 comment)

File src/soc/amd/common/psp_verstage/psp_verstage.c:

https://review.coreboot.org/c/coreboot/+/59082/comment/7989eb38_56e7af53 
PS4, Line 238: 	verstage_mainboard_espi_init();
> Zork boards need implementation for this too.

That explains Jenkins failure. We need to add these functions in Zork board too.