Factor out the FSP-dependent graphics init call and header into a
separate file, so that the common graphics init can be used by non-FSP
platforms (eg Stoneyridge) without any preprocessor guards.
TEST=build google/skyrim
Change-Id: Ib025ad3adec0945b4454892d78c30b4cc79e57a0
Signed-off-by: Matt DeVillier <matt.devillier@amd.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/78599
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>