arm: zynq: Add efuse node for Zynq-7000S devices

Add access to efuse for Zynq-7000S device detection.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>

arch/arm/dts/zynq-7000.dtsi

@@ -323,6 +323,11 @@
 			syscon = <&slcr>;
 		};
 
+		efuse: efuse@f800d000 {
+			compatible = "xlnx,zynq-efuse";
+			reg = <0xf800d000 0x20>;
+		};
+
 		global_timer: timer@f8f00200 {
 			compatible = "arm,cortex-a9-global-timer";
 			reg = <0xf8f00200 0x20>;