Under memory load, instmem allocations could end up in the regions of
VRAM that are inaccessible right after boot, and be corrupted after a
suspend/resume cycle as a result of being restored before booting the
mem unlock firmware.
Signed-off-by: NBen Skeggs <bskeggs@redhat.com>
Reviewed-by: NLyude Paul <lyude@redhat.com>