mb/clevo/l140cu: add libgfxinit support

Change-Id: Id58bb2ce5fdaeaf158d02d8c812ab2c331db352d
Signed-off-by: Michael Niewöhner <foss@mniewoehner.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/48751
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-by:  Felix Singer <felixsinger@posteo.net>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/mainboard/clevo/cml-u/Kconfig

@@ -13,6 +13,7 @@ config BOARD_SPECIFIC_OPTIONS
 	select HAVE_SPD_IN_CBFS
 	select INTEL_GMA_HAVE_VBT
 	select INTEL_LPSS_UART_FOR_CONSOLE
+	select MAINBOARD_HAS_LIBGFXINIT
 	select MAINBOARD_HAS_LPC_TPM
 	select MAINBOARD_HAS_TPM2
 	select NO_UART_ON_SUPERIO

src/mainboard/clevo/cml-u/Makefile.inc

@@ -6,5 +6,6 @@ bootblock-y += variants/$(VARIANT_DIR)/gpio_early.c
 ramstage-y += ramstage.c
 ramstage-y += variants/$(VARIANT_DIR)/gpio.c
 ramstage-y += variants/$(VARIANT_DIR)/hda_verb.c
+ramstage-$(CONFIG_MAINBOARD_USE_LIBGFXINIT) += variants/$(VARIANT_DIR)/gma-mainboard.ads
 
 subdirs-y += variants/$(VARIANT_DIR)

src/mainboard/clevo/cml-u/variants/l140cu/gma-mainboard.ads

@@ -0,0 +1,18 @@
+-- SPDX-License-Identifier: GPL-2.0-or-later
+
+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,   -- USB-C
+      HDMI1, -- USB-C
+      HDMI2, -- HDMI
+      eDP,
+      others => Disabled);
+
+end GMA.Mainboard;