ARM: dts: imx: Add ocotp node for imx6ul

Add ocotp node for i.MX6UL SOC.
Signed-off-by: Bai Ping <ping.bai@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm/boot/dts/imx6ul.dtsi

@@ -850,6 +850,12 @@ mmdc: mmdc@021b0000 {
 				reg = <0x021b0000 0x4000>;
 			};
 
+			ocotp: ocotp-ctrl@021bc000 {
+				compatible = "fsl,imx6ul-ocotp", "syscon";
+				reg = <0x021bc000 0x4000>;
+				clocks = <&clks IMX6UL_CLK_OCOTP>;
+			};
+
 			lcdif: lcdif@021c8000 {
 				compatible = "fsl,imx6ul-lcdif", "fsl,imx28-lcdif";
 				reg = <0x021c8000 0x4000>;