ARM: shmobile: Koelsch DT reference GPIO LED support

Add led6, led7 and led8 to the Koelsch DT reference board support.
Signed-off-by: NMagnus Damm <damm@opensource.se>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

arch/arm/boot/dts/r8a7791-koelsch-reference.dts

@@ -11,6 +11,7 @@
 
 /dts-v1/;
 #include "r8a7791.dtsi"
+#include <dt-bindings/gpio/gpio.h>
 
 / {
 	model = "Koelsch";
@@ -29,6 +30,19 @@
 		#address-cells = <1>;
 		#size-cells = <1>;
 	};
+
+	leds {
+		compatible = "gpio-leds";
+		led6 {
+			gpios = <&gpio2 19 GPIO_ACTIVE_HIGH>;
+		};
+		led7 {
+			gpios = <&gpio2 20 GPIO_ACTIVE_HIGH>;
+		};
+		led8 {
+			gpios = <&gpio2 21 GPIO_ACTIVE_HIGH>;
+		};
+	};
 };
 
 &pfc {