[coreboot-gerrit] [L] Change in coreboot[main]: mb/google/brox/var/greenbayupoc: Update devicetree and gpio settings

[Eren Peng (Code Review)]

Attention is currently required from: Ivan Chen, Paul Menzel.

Eren Peng has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/82093?usp=email )

Change subject: mb/google/brox/var/greenbayupoc: Update devicetree and gpio settings
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Patch Set 20:

This change is ready for review.