ARM: dts: remove disabled status from RTC node for exynos5440-ssdk5440

Signed-off-by: Giridhar Maruthy <giridhar.m@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

arch/arm/boot/dts/exynos5440-ssdk5440.dts

@@ -35,8 +35,4 @@ i2c@F0000 {
 	i2c@100000 {
 		status = "disabled";
 	};
-
-	rtc {
-		status = "disabled";
-	};
 };