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

[Raul Rangel (Code Review)]

Attention is currently required from: Jason Nien, Jon Murphy, Martin Roth.

Raul Rangel 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/cf7d4400_12071830 :
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 variants implement `variant_get_ddi_descriptors` instead of having the `variant_has_hdmi` function.