arm64: dts: add random number generator dts node to APM X-Gene platform.

This adds random number generator dts node to APM X-Gene platform.
Signed-off-by: NFeng Kan <fkan@apm.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

arch/arm64/boot/dts/apm-storm.dtsi

@@ -269,6 +269,19 @@
 				enable-mask = <0x2>;
 				clock-output-names = "rtcclk";
 			};
+
+			rngpkaclk: rngpkaclk@17000000 {
+				compatible = "apm,xgene-device-clock";
+				#clock-cells = <1>;
+				clocks = <&socplldiv2 0>;
+				reg = <0x0 0x17000000 0x0 0x2000>;
+				reg-names = "csr-reg";
+				csr-offset = <0xc>;
+				csr-mask = <0x10>;
+				enable-offset = <0x10>;
+				enable-mask = <0x10>;
+				clock-output-names = "rngpkaclk";
+			};
 		};
 
 		serial0: serial@1c020000 {
@@ -421,5 +434,13 @@
 
 			};
 		};
+
+		rng: rng@10520000 {
+			compatible = "apm,xgene-rng";
+			reg = <0x0 0x10520000 0x0 0x100>;
+			interrupts = <0x0 0x41 0x4>;
+			clocks = <&rngpkaclk 0>;
+		};
+
 	};
 };