drivers/intel/gma/acpi: Provide default definition for displays

Use it wherever the standard numbers were copied to. Bit 31 is set
at runtime unconditionally, so we don't need it here.

Change-Id: I0d853c3b8250a2c7b2d1a91985a555e4b17ad76c
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/39731
Reviewed-by: Patrick Rudolph <siro@das-labor.org>
Reviewed-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/mainboard/compulab/intense_pc/devicetree.cb b/src/mainboard/compulab/intense_pc/devicetree.cb
index b333245..20b8bed 100644
--- a/src/mainboard/compulab/intense_pc/devicetree.cb
+++ b/src/mainboard/compulab/intense_pc/devicetree.cb
@@ -10,9 +10,8 @@
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
 
-chip northbridge/intel/sandybridge # FIXME: check gfx.ndid and gfx.did
-	register "gfx.did" = "{ 0x80000100, 0x80000240, 0x80000410, 0x80000410, 0x00000005 }"
-	register "gfx.ndid" = "3"
+chip northbridge/intel/sandybridge # FIXME: check gfx
+	register "gfx" = "GMA_STATIC_DISPLAYS(0)"
 	register "gpu_dp_b_hotplug" = "4"
 	register "gpu_dp_c_hotplug" = "4"
 	register "gpu_dp_d_hotplug" = "4"