ARM: dts: imx6ul: add RTC support

Add RTC support for i.MX6UL.

Signed-off-by: Anson Huang <b20788@freescale.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm/boot/dts/imx6ul.dtsi

@@ -412,6 +412,19 @@
 				fsl,anatop = <&anatop>;
 			};
 
+			snvs: snvs@020cc000 {
+				compatible = "fsl,sec-v4.0-mon", "syscon", "simple-mfd";
+				reg = <0x020cc000 0x4000>;
+
+				snvs_rtc: snvs-rtc-lp {
+					compatible = "fsl,sec-v4.0-mon-rtc-lp";
+					regmap = <&snvs>;
+					offset = <0x34>;
+					interrupts = <GIC_SPI 19 IRQ_TYPE_LEVEL_HIGH>,
+						     <GIC_SPI 20 IRQ_TYPE_LEVEL_HIGH>;
+				};
+			};
+
 			epit1: epit@020d0000 {
 				reg = <0x020d0000 0x4000>;
 				interrupts = <GIC_SPI 56 IRQ_TYPE_LEVEL_HIGH>;