ARM: zynq: DT: Add LEDs to zc702 DT

Adds LEDs to the zc702 devicetree for use with the leds-gpio driver.
Signed-off-by: Ezra Savard <ezra.savard@xilinx.com>
Reviewed-by: Soren Brinkmann <soren.brinkmann@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>

arch/arm/boot/dts/zynq-zc702.dts

@@ -27,6 +27,15 @@ chosen {
 		bootargs = "console=ttyPS0,115200 earlyprintk";
 	};
 
+	leds {
+		compatible = "gpio-leds";
+
+		ds23 {
+			label = "ds23";
+			gpios = <&gpio0 10 0>;
+			linux,default-trigger = "heartbeat";
+		};
+	};
 };
 
 &can0 {