[M] Change in coreboot[main]: mb/google/guybrush: Update DDI descriptor definition

[Jon Murphy (Code Review)]

Attention is currently required from: Jason Nien, Martin Roth, Raul Rangel.

Jon Murphy has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/79793?usp=email )

Change subject: mb/google/guybrush: Update DDI descriptor definition
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Patch Set 2:

(1 comment)

File src/mainboard/google/guybrush/variants/baseboard/port_descriptors.c:

https://review.coreboot.org/c/coreboot/+/79793/comment/8a36ee70_fde7b878 :
PS2, Line 36: 		.connector_type = DDI_EDP,
            : 		.aux_index = DDI_AUX1,
            : 		.hdp_index = DDI_HDP1
> Optional: Can we `#define` these like we did for the DXIO descriptors? We could then make the varian […]

We can.  I wasn't sure if there was a lot of benefit in this case, but wanted to leave the option there if it was beneficial in the future.  My assumption from the logic in the Dewatt/Guybrush variants is that some SKU's for those models do have an HDMI port, so we would still be defining it the default way and overriding.  I could be wrong.  WDYT?