ARM: mx28: add auart2 2 pins pinmux to imx28.dtsi

Add auart2 2 pins configuration on its main pads
Signed-off-by: Eric Bénard <eric@eukrea.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>

arch/arm/boot/dts/imx28.dtsi

@@ -330,6 +330,17 @@ auart2_2pins_a: auart2-2pins@0 {
 					fsl,pull-up = <0>;
 				};
 
+				auart2_2pins_b: auart2-2pins@1 {
+					reg = <1>;
+					fsl,pinmux-ids = <
+						0x3080 /* MX28_PAD_AUART2_RX__AUART2_RX */
+						0x3090 /* MX28_PAD_AUART2_TX__AUART2_TX */
+					>;
+					fsl,drive-strength = <0>;
+					fsl,voltage = <1>;
+					fsl,pull-up = <0>;
+				};
+
 				auart3_pins_a: auart3@0 {
 					reg = <0>;
 					fsl,pinmux-ids = <