ARM64: zynqmp: Add cortexa53 edac node

This patch adds edac node for arm cortexa53 to report
errors on L1 and L2 caches.

Signed-off-by: Naga Sureshkumar Relli <nagasure@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>

arch/arm/dts/zynqmp.dtsi

@@ -229,6 +229,10 @@
 			     <1 10 0xf01>;
 	};
 
+	edac {
+		compatible = "arm,cortex-a53-edac";
+	};
+
 	amba_apu: amba_apu@0 {
 		compatible = "simple-bus";
 		#address-cells = <2>;