This is no longer needed, since now this parameter is already set using
the ONBOARD_VGA_IS_PRIMARY config [1].
[1] commit 1a4496e79f
Change-Id: Ie1bd62ecba2155af5c94f043ea7531f32989588f
Signed-off-by: Maxim Polyakov <max.senia.poliak@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/56517
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>