getac/p470: Enable native VGA init

Change-Id: I6c5a2324d1a9e21f4e052678be8f0e0dbfed6494
Signed-off-by: Patrick Georgi <patrick@georgi-clan.de>
Reviewed-on: http://review.coreboot.org/11136
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

src/mainboard/getac/p470/Kconfig

@@ -37,6 +37,11 @@ config BOARD_SPECIFIC_OPTIONS # dummy
 	select UDELAY_LAPIC
 	select BOARD_ROMSIZE_KB_1024
 	select CHANNEL_XOR_RANDOMIZATION
+	select VGA
+	select MAINBOARD_HAS_NATIVE_VGA_INIT
+	select MAINBOARD_HAS_NATIVE_VGA_INIT_TEXTMODECFG
+	select INTEL_EDID
+	select INTEL_INT15
 
 config MAINBOARD_DIR
 	string

src/mainboard/getac/p470/mainboard.c

@@ -23,6 +23,7 @@
 #include <device/pci_def.h>
 #include <arch/io.h>
 #include <delay.h>
+#include <drivers/intel/gma/int15.h>
 
 
 #include "ec_oem.c"
@@ -81,6 +82,7 @@ static void pcie_limit_power(void)
 static void mainboard_init(device_t dev)
 {
 	ec_enable();
+	install_intel_vga_int15_handler(GMA_INT15_ACTIVE_LFP_INT_LVDS, GMA_INT15_PANEL_FIT_TXT_STRETCH, 0, 3);
 }
 
 // mainboard_enable is executed as first thing after