Enable RTC driver.

The MC13783 MFD also contains an RTC. Enable it.
To avoid "No RTC device found, ALARM timers will not wake from suspend",
this patch is needed:
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=c008ba58af24dc5d0d8e9fe6e59d876910254761

Signed-off-by: Jürgen Lambrecht <J.Lambrecht@televic.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
diff --git a/arch/arm/mach-imx/mach-mx27_3ds.c b/arch/arm/mach-imx/mach-mx27_3ds.c
index 84fb793..6fa6934 100644
--- a/arch/arm/mach-imx/mach-mx27_3ds.c
+++ b/arch/arm/mach-imx/mach-mx27_3ds.c
@@ -293,7 +293,8 @@
 		.num_regulators = ARRAY_SIZE(mx27_3ds_regulators),
 
 	},
-	.flags  = MC13783_USE_REGULATOR | MC13783_USE_TOUCHSCREEN,
+	.flags  = MC13783_USE_REGULATOR | MC13783_USE_TOUCHSCREEN |
+	MC13783_USE_RTC,
 };
 
 /* SPI */