mainboard/lenovo/x220: allow to use libgfxinit

Change-Id: I8b02596b116c0b164e83e7b02449c547224a50a6
Signed-off-by: Alexander Couzens <lynxis@fe80.eu>
Reviewed-on: https://review.coreboot.org/20330
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>

src/mainboard/lenovo/x220/Kconfig

@@ -19,6 +19,8 @@ config BOARD_SPECIFIC_OPTIONS # dummy
 	select SANDYBRIDGE_IVYBRIDGE_LVDS
 	select DRIVERS_RICOH_RCE822
 	select MAINBOARD_HAS_LPC_TPM
+	select MAINBOARD_HAS_LIBGFXINIT
+	select GFX_GMA_INTERNAL_IS_LVDS
 
 	# Workaround for EC/KBC IRQ1.
 	select SERIRQ_CONTINUOUS_MODE

src/mainboard/lenovo/x220/Makefile.inc

@@ -15,3 +15,5 @@
 
 smm-$(CONFIG_HAVE_SMI_HANDLER) += smihandler.c
 romstage-y += gpio.c
+
+ramstage-$(CONFIG_MAINBOARD_USE_LIBGFXINIT) += gma-mainboard.ads

src/mainboard/lenovo/x220/gma-mainboard.ads

@@ -0,0 +1,20 @@
+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,
+      DP2,
+      DP3,
+      HDMI1,
+      HDMI2,
+      HDMI3,
+      Analog,
+      Internal,
+      others => Disabled);
+
+end GMA.Mainboard;