soc/intel/common/graphics: Add new Kconfig SOC_INTEL_DISABLE_IGD

This SOC_INTEL_DISABLE_IGD Kconfig will allow to skip IGD
initialization using FSP GOP and eventually disable the IGD.

TEST=Able to get depthcharge pre-OS splash screen when mainboard
user selects SOC_INTEL_DISABLE_IGD with below HW/FW/SW
configuration:

HW: ADLRVP + AMD Radeon RX 5700 PCI-E DGPU
FW: coreboot with depthcharge as payload for ADLRVP and OpRom for
AMD PCI-E DGPU
SW: Chrome OS RC10 release

Change-Id: I465541cb45c9022d53a5beb3fff1f80660c357c9
Signed-off-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/49470
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>

0 files changed, 0 insertions, 0 deletions