Change in coreboot[master]: device: Add new Kconfig DGPU_VGA_IS_PRIMARY

[Nico Huber (Code Review)]

Attention is currently required from: Furquan Shaikh, Tim Wawrzynczak, Subrata Banik, Angel Pons.
Nico Huber has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/49470 )

Change subject: device: Add new Kconfig DGPU_VGA_IS_PRIMARY
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Patch Set 1:

(2 comments)

Patchset:

PS1:
> @Nico if you can help with review ?

It's hard as you never mention if you are referring to a discrete GPU soldered
to the mainboard or a discrete, plugged-in card. You may not know this, but we
don't all have access to your board schematics.

File src/device/Kconfig:

https://review.coreboot.org/c/coreboot/+/49470/comment/948c7575_91f6dcb2 
PS1, Line 124: external
             : 	 graphics card
This is exactly what the very next option "ONBOARD_VGA_IS_PRIMARY"
is about.