mx31_3ds: Add touchscreen support

On the mx31_3ds board the touchscreen feature is provided by MC13783 PMIC.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
diff --git a/arch/arm/mach-mx3/mach-mx31_3ds.c b/arch/arm/mach-mx3/mach-mx31_3ds.c
index 3dea407..e4efbfe 100644
--- a/arch/arm/mach-mx3/mach-mx31_3ds.c
+++ b/arch/arm/mach-mx3/mach-mx31_3ds.c
@@ -127,7 +127,7 @@
 static struct mc13783_platform_data mc13783_pdata __initdata = {
 	.regulators = mx31_3ds_regulators,
 	.num_regulators = ARRAY_SIZE(mx31_3ds_regulators),
-	.flags  = MC13783_USE_REGULATOR,
+	.flags  = MC13783_USE_REGULATOR | MC13783_USE_TOUCHSCREEN,
 };
 
 /* SPI */