mb/google/link: use default GMA display profile

Link's DID data makes no sense, and ACPI backlight controls don't work
as a result. Replace them with the default profile used by most/all
other boards.

Test: build/boot google/link, verify ACPI backlight controls functional

Change-Id: Ia7cb3f10bd3c05ebaf414c17a8f94d2e9b40ae26
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/39908
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Nico Huber <nico.h@gmx.de>
diff --git a/src/mainboard/google/link/devicetree.cb b/src/mainboard/google/link/devicetree.cb
index ec7fb20..477cd47 100644
--- a/src/mainboard/google/link/devicetree.cb
+++ b/src/mainboard/google/link/devicetree.cb
@@ -1,7 +1,6 @@
 chip northbridge/intel/sandybridge
 	# IGD Displays
-	register "gfx.ndid" = "1"
-	register "gfx.did" = "{ 0x80000000, 0x80000000, 0x00000000, 0x00000000, 0x00000000 }"
+	register "gfx" = "GMA_STATIC_DISPLAYS(0)"
 
 	# Enable DisplayPort Hotplug with 6ms pulse
 	register "gpu_dp_d_hotplug" = "0x06"