[M] Change in coreboot[master]: mb/google/skyrim: Allow port descriptors to be overridden

[Karthik Ramasubramanian (Code Review)]

Attention is currently required from: Martin L Roth, Jason Nien, Arthur Heymans, Martin Roth.

Karthik Ramasubramanian has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/73294 )

Change subject: mb/google/skyrim: Allow port descriptors to be overridden
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Patch Set 3:

(1 comment)

File src/mainboard/google/skyrim/port_descriptors.c:

https://review.coreboot.org/c/coreboot/+/73294/comment/2fc703a0_142a0d78 
PS2, Line 97: if (!*dxio_num || !*dxio_descs)
            : 	{
            : 		*dxio_descs = skyrim_mdn_dxio_descriptors;
            : 		*dxio_num = ARRAY_SIZE(skyrim_mdn_dxio_descriptors);
            : 	}
> Sure, we can do that. […]

Looking through the use-case it sounds Kconfig makes sense to me too.

If the concerned config is not enabled, then use the baseboard port_descriptors.c. Else use the override port_descriptors.c from the variant.