ARM: dts: imx28: add alternative pinmuxing for mmc2

Signed-off-by: Michael Heimpold <michael.heimpold@i2se.com>
Cc: Stefan Wahren <stefan.wahren@i2se.com>
Acked-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm/boot/dts/imx28.dtsi

@@ -590,6 +590,22 @@ MX28_PAD_SSP0_DATA7__SSP2_SCK
 					fsl,pull-up = <MXS_PULL_ENABLE>;
 				};
 
+				mmc2_4bit_pins_b: mmc2-4bit@1 {
+					reg = <1>;
+					fsl,pinmux-ids = <
+						MX28_PAD_SSP2_SCK__SSP2_SCK
+						MX28_PAD_SSP2_MOSI__SSP2_CMD
+						MX28_PAD_SSP2_MISO__SSP2_D0
+						MX28_PAD_SSP2_SS0__SSP2_D3
+						MX28_PAD_SSP2_SS1__SSP2_D1
+						MX28_PAD_SSP2_SS2__SSP2_D2
+						MX28_PAD_AUART1_RX__SSP2_CARD_DETECT
+					>;
+					fsl,drive-strength = <MXS_DRIVE_8mA>;
+					fsl,voltage = <MXS_VOLTAGE_HIGH>;
+					fsl,pull-up = <MXS_PULL_ENABLE>;
+				};
+
 				mmc2_cd_cfg: mmc2-cd-cfg {
 					fsl,pinmux-ids = <
 						MX28_PAD_AUART1_RX__SSP2_CARD_DETECT