ARM: dts: mxs: Add alternative I2C muxing options for imx28

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Cc: Brian Lilly <brian@crystalfontz.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>

arch/arm/boot/dts/imx28.dtsi

@@ -410,6 +410,17 @@ i2c0_pins_a: i2c0@0 {
 					fsl,pull-up = <1>;
 				};
 
+				i2c0_pins_b: i2c0@1 {
+					reg = <1>;
+					fsl,pinmux-ids = <
+						0x3001 /* MX28_PAD_AUART0_RX__I2C0_SCL */
+						0x3011 /* MX28_PAD_AUART0_TX__I2C0_SDA */
+					>;
+					fsl,drive-strength = <1>;
+					fsl,voltage = <1>;
+					fsl,pull-up = <1>;
+				};
+
 				saif0_pins_a: saif0@0 {
 					reg = <0>;
 					fsl,pinmux-ids = <