am335x-bonegreen-gateway: fix USR4 LED pinmux

Author: jadonk

src/arm/am335x-bonegreen-gateway.dts

@@ -37,6 +37,8 @@
 	};
 
 	leds {
+		pinctrl-0 = <&user_leds_s0 &extra_led_pins>;
+
 		led6 {
 			label = "beaglebone:green:usr4";
 			gpios = <&gpio2 21 GPIO_ACTIVE_HIGH>;
@@ -98,6 +100,13 @@
 		>;
 	};
 
+        extra_led_pins: pinmux_extra_led_pins {
+		pinctrl-single,pins = <
+			AM33XX_PADCONF(AM335X_PIN_MII1_RXD0, PIN_OUTPUT, MUX_MODE7)	/* WL_Active_LED / USR4 */
+		>;
+	};
+
+
 	wl18xx_pins: pinmux_wl18xx_pins {
 		pinctrl-single,pins = <
 			AM33XX_PADCONF(AM335X_PIN_MII1_TX_CLK, PIN_OUTPUT_PULLDOWN, MUX_MODE7)	/* gmii1_txclk.gpio3_9 WL_EN */