[S] Change in coreboot[master]: soc/amd/cezanne: Update XHCI GPE to use constant

[Angel Pons (Code Review)]

Attention is currently required from: Robert Zieba, Jason Glenesk, Raul Rangel, Fred Reitberger, Felix Held.

Angel Pons has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/69917 )

Change subject: soc/amd/cezanne: Update XHCI GPE to use constant
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Patch Set 3:

(1 comment)

File src/soc/amd/cezanne/xhci.c:

https://review.coreboot.org/c/coreboot/+/69917/comment/f92d5228_077d1b40 
PS3, Line 14: GEVENT_31
> Is this macro still needed?

Apparently it still needs to be defined because `XHCI_GEVENT` is defined as `GEVENT_31`: https://review.coreboot.org/c/coreboot/+/67936/10/src/soc/amd/common/block/i...