dtb: amd: Add PERF CCN-504 device tree node

Add PERF CCN-504 device tree node.
Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Signed-off-by: Olof Johansson <olof@lixom.net>

arch/arm64/boot/dts/amd/amd-seattle-soc.dtsi

@@ -229,5 +229,12 @@ pcie0: pcie@f0000000 {
 				/* 64-bit MMIO (size= 124G) */
 				<0x03000000 0x01 0x00000000 0x01 0x00000000 0x7f 0x00000000>;
 		};
+
+		/* Perf CCN504 PMU */
+		ccn: ccn@0xe8000000 {
+			compatible = "arm,ccn-504";
+			reg = <0x0 0xe8000000 0 0x1000000>;
+			interrupts = <0 380 4>;
+		};
 	};
 };