gma hsw+: Add boilerplate for DDI buffer translations

Change-Id: I8fcba64a3c663b9eea7fb11088c62ea584d63e04
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: https://review.coreboot.org/20129
Tested-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
diff --git a/common/broxton/Makefile.inc b/common/broxton/Makefile.inc
index 90241b2..0197c6a 100644
--- a/common/broxton/Makefile.inc
+++ b/common/broxton/Makefile.inc
@@ -1,3 +1,4 @@
+gfxinit-y += hw-gfx-gma-connectors-ddi-buffers.ads
 gfxinit-y += hw-gfx-gma-ddi_phy.adb
 gfxinit-y += hw-gfx-gma-ddi_phy.ads
 gfxinit-y += hw-gfx-gma-plls.adb