[coreboot-gerrit] Change in coreboot[master]: nb/x4x: Disable IGD when external GPU is found

[Patrick Rudolph (Code Review)]

Patrick Rudolph has posted comments on this change. ( https://review.coreboot.org/18504 )

Change subject: nb/x4x: Disable IGD when external GPU is found
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Patch Set 14:

Lenovo's Hybrid Driver is special, as it mimics a vendor bios feature and you've got a hardware switch to connect the panel to one of the GPUs.
In theory reverse prime should work, but in my opinion the option ROM will be run on igd, as it's connected to the panel, and that would make it decode VGA cycles/Primary.

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Gerrit-MessageType: comment
Gerrit-Change-Id: I74890918feb0f1ff6b971c4aaa96f1f7b75266ac
Gerrit-PatchSet: 14
Gerrit-Project: coreboot
Gerrit-Branch: master
Gerrit-Owner: Arthur Heymans <arthur at aheymans.xyz>
Gerrit-Reviewer: Arthur Heymans <arthur at aheymans.xyz>
Gerrit-Reviewer: Kyösti Mälkki <kyosti.malkki at gmail.com>
Gerrit-Reviewer: Nico Huber <nico.h at gmx.de>
Gerrit-Reviewer: Patrick Rudolph <siro at das-labor.org>
Gerrit-Reviewer: Paul Menzel <paulepanter at users.sourceforge.net>
Gerrit-Reviewer: build bot (Jenkins)
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