ARM: dts: imx6sll: add rng

Add node for the RNGB block.
Signed-off-by: Horia Geantă <horia.geanta@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm/boot/dts/imx6sll.dtsi

@@ -786,6 +786,13 @@ mmdc: memory-controller@21b0000 {
 				clocks = <&clks IMX6SLL_CLK_MMDC_P0_IPG>;
 			};
 
+			rngb: rng@21b4000 {
+				compatible = "fsl,imx6sll-rngb", "fsl,imx25-rngb";
+				reg = <0x021b4000 0x4000>;
+				interrupts = <GIC_SPI 5 IRQ_TYPE_LEVEL_HIGH>;
+				clocks = <&clks IMX6SLL_CLK_DUMMY>;
+			};
+
 			ocotp: efuse@21bc000 {
 				#address-cells = <1>;
 				#size-cells = <1>;