soc/intel/common/gfx: rename and guard graphics_soc_init()

Rename to graphics_soc_panel_init, to more accurately convey
operations performed by the function. Guard execution so we
don't attempt to reconfigure the panel after FSP has already
done so.

This fixes FSP/GOP display init on APL/GLK, which was broken by
attempting to configure the panel after FSP had already done so.

Change-Id: I8e68a16b2efb59965077735578b1cc6ffd5a58f0
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/48884
Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Michael Niewöhner <foss@mniewoehner.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

0 files changed, 0 insertions, 0 deletions