ARM: dts: enable RTC device node for exynos4412-odroidx

This patch enables RTC device node defined in exynos4.dtsi for
exynos4412-odroidx.
Signed-off-by: Dongjin Kim <tobetter@gmail.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

arch/arm/boot/dts/exynos4412-odroidx.dts

@@ -68,6 +68,10 @@ regulator_p3v3 {
 		regulator-boot-on;
 	};
 
+	rtc@10070000 {
+		status = "okay";
+	};
+
 	sdhci@12530000 {
 		bus-width = <4>;
 		pinctrl-0 = <&sd2_clk &sd2_cmd &sd2_cd &sd2_bus4>;