[coreboot-gerrit] Change in coreboot[master]: soc/amd/common: Add placeholder GPIO macro, PAD_UNCHANGED

[Raul Rangel (Code Review)]

Attention is currently required from: Jason Glenesk, Martin Roth, Marshall Dawson, Felix Held.
Raul Rangel has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/52763 )

Change subject: soc/amd/common: Add placeholder GPIO macro, PAD_UNCHANGED
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Patch Set 1:

(1 comment)

Commit Message:

https://review.coreboot.org/c/coreboot/+/52763/comment/ca317859_a2e9c269 
PS1, Line 9: GPIOs can only be updated in gpio_configure_pads_with_override() if they
           : are present in the base table.  If they are not there, the override
           : does not work.  This allows them to be in the base table so that they can
           : be overridden without changing the existing configuration.
> talked with Martin and the scopes of those two things are a bit different, so it's probably a good i […]

What's the level of effort required to fix this behavior? I would rather fix it then introduce another PAD_X macro.