arch: arm: dts: bcm96753ref: enable led support

Enable the led in the device tree of the refboard bcm96753ref.
It also defines two leds (led_red ad led_green).

Signed-off-by: Philippe Reynes <philippe.reynes@softathome.com>
diff --git a/arch/arm/dts/bcm96753ref.dts b/arch/arm/dts/bcm96753ref.dts
index e27a5b5..ca15ca5f 100644
--- a/arch/arm/dts/bcm96753ref.dts
+++ b/arch/arm/dts/bcm96753ref.dts
@@ -78,3 +78,21 @@
 		brcm,nand-oob-sector-size = <16>;
 	};
 };
+
+&leds {
+	status = "okay";
+	#address-cells = <1>;
+	#size-cells = <0>;
+	brcm,serial-led-en-pol;
+	brcm,serial-led-data-ppol;
+
+	led@0 {
+		reg = <0>;
+		label = "led_red";
+	};
+
+	led@1 {
+		reg = <1>;
+		label = "led_green";
+	};
+};