ARM: dts: gose: Add GPIO leds to DT

Instantiate the GPIO leds in the gose device tree.

Based on similar work for the koelsch board by Magnus Damm.
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Tested-by: Magnus Damm <damm+renesas@opensource.se>

arch/arm/boot/dts/r8a7793-gose.dts

@@ -113,6 +113,22 @@ key-g {
 		        debounce-interval = <20>;
 		};
 	};
+
+	leds {
+		compatible = "gpio-leds";
+		led6 {
+			gpios = <&gpio2 19 GPIO_ACTIVE_HIGH>;
+			label = "LED6";
+		};
+		led7 {
+			gpios = <&gpio2 20 GPIO_ACTIVE_HIGH>;
+			label = "LED7";
+		};
+		led8 {
+			gpios = <&gpio2 21 GPIO_ACTIVE_HIGH>;
+			label = "LED8";
+		};
+	};
 };
 
 &extal_clk {