nb/lenovo/t400: Enable libgfxinit

Change-Id: I243c22c83a5575c2e1500cc869c41691c4fba415
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/27014
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Rudolph <siro@das-labor.org>

src/mainboard/lenovo/t400/Kconfig

@@ -22,6 +22,7 @@ config BOARD_SPECIFIC_OPTIONS # dummy
 	select SUPERIO_NSC_PC87382
 	select SUPERIO_NSC_PC87384
 	select DRIVERS_LENOVO_HYBRID_GRAPHICS
+	select MAINBOARD_HAS_LIBGFXINIT
 
 config MAINBOARD_DIR
 	string

src/mainboard/lenovo/t400/Makefile.inc

@@ -18,3 +18,5 @@ romstage-y += dock.c
 ramstage-y += dock.c
 ramstage-y += cstates.c
 ramstage-y += blc.c
+
+ramstage-$(CONFIG_MAINBOARD_USE_LIBGFXINIT) += gma-mainboard.ads

src/mainboard/lenovo/t400/gma-mainboard.ads

@@ -0,0 +1,31 @@
+--
+-- This file is part of the coreboot project.
+--
+-- This program is free software; you can redistribute it and/or modify
+-- it under the terms of the GNU General Public License as published by
+-- the Free Software Foundation; either version 2 of the License, or
+-- (at your option) any later version.
+--
+-- This program is distributed in the hope that it will be useful,
+-- but WITHOUT ANY WARRANTY; without even the implied warranty of
+-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+-- GNU General Public License for more details.
+--
+
+with HW.GFX.GMA;
+with HW.GFX.GMA.Display_Probing;
+
+use HW.GFX.GMA;
+use HW.GFX.GMA.Display_Probing;
+
+private package GMA.Mainboard is
+
+   ports : constant Port_List :=
+     (DP1,
+      HDMI1,
+      HDMI2,
+      Analog,
+      Internal,
+      others => Disabled);
+
+end GMA.Mainboard;