ARM: dts: omap3-tobi: Add missing pinctrl

Add missing pinctrl entries:
- i2c3
Signed-off-by: Florian Vaussard <florian.vaussard@epfl.ch>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/boot/dts/omap3-overo-tobi-common.dtsi

@@ -33,6 +33,15 @@ vdd33a: regulator-vdd33a {
 	};
 };
 
+&omap3_pmx_core {
+	i2c3_pins: pinmux_i2c3_pins {
+		pinctrl-single,pins = <
+			OMAP3_CORE1_IOPAD(0x21c2, PIN_INPUT | MUX_MODE0)	/* i2c3_scl.i2c3_scl */
+			OMAP3_CORE1_IOPAD(0x21c4, PIN_INPUT | MUX_MODE0)	/* i2c3_sda.i2c3_sda */
+		>;
+	};
+};
+
 &gpmc {
 	ranges = <5 0 0x2c000000 0x1000000>;	/* CS5 */
 
@@ -70,6 +79,8 @@ ethernet@5,0 {
 };
 
 &i2c3 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2c3_pins>;
 	clock-frequency = <100000>;
 };