ARM: dts: omap3-gta04a5: define pinmux for bluetooth enable of ti,wl1837 module

Properly pinmux the bluetooth enable so that it is not floating.
Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/boot/dts/omap3-gta04a5.dts

@@ -48,6 +48,12 @@ irda_en {
 };
 
 &omap3_pmx_core {
+	bt_pins: pinmux_bt_pins {
+		pinctrl-single,pins = <
+			OMAP3_CORE1_IOPAD(0x2166, PIN_OUTPUT | MUX_MODE4)	/* mmc2_dat5 = mmc3_dat1 = gpio137 */
+		>;
+	};
+
 	wlan_pins: pinmux_wlan_pins {
 		pinctrl-single,pins = <
 			OMAP3_CORE1_IOPAD(0x2168, PIN_OUTPUT | MUX_MODE4)	/* mmc2_dat6 = mmc3_dat2 = gpio138 */