ARM: dts: omap3-igep0030: add mux conf for GPIO LED

The IGEP COM MOdule has a GPIO LED connected to OMAP
pins. Configure this pin as output GPIO.
Signed-off-by: NJavier Martinez Canillas <javier.martinez@collabora.co.uk>
Tested-by: NEnric Balletbo i Serra <eballetbo@iseebcn.com>
Signed-off-by: NBenoit Cousson <bcousson@baylibre.com>

arch/arm/boot/dts/omap3-igep0030.dts

@@ -16,7 +16,10 @@
 	compatible = "isee,omap3-igep0030", "ti,omap3";
 
 	leds {
+		pinctrl-names = "default";
+		pinctrl-0 = <&leds_pins>;
 		compatible = "gpio-leds";
+
 		boot {
 			 label = "omap3:green:boot";
 			 gpios = <&twl_gpio 13 GPIO_ACTIVE_LOW>;
@@ -43,6 +46,12 @@
 	};
 };
 
+&leds_pins {
+	pinctrl-single,pins = <
+		0x5b0 (PIN_OUTPUT | MUX_MODE4) /* etk_d2.gpio_16 */
+	>;
+};
+
 &gpmc {
 	ranges = <0 0 0x00000000 0x20000000>;