arm64: dts: m3ulcb: enable GPIO leds

This supports GPIO leds on M3ULCB board

Signed-off-by: Vladimir Barinov <vladimir.barinov@cogentembedded.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

arch/arm64/boot/dts/renesas/r8a7796-m3ulcb.dts

@@ -30,6 +30,17 @@
 		/* first 128MB is reserved for secure area. */
 		reg = <0x0 0x48000000 0x0 0x38000000>;
 	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		led5 {
+			gpios = <&gpio6 12 GPIO_ACTIVE_HIGH>;
+		};
+		led6 {
+			gpios = <&gpio6 13 GPIO_ACTIVE_HIGH>;
+		};
+	};
 };
 
 &extal_clk {