ARM: dts: imx28: add alternative pinmuxing for mac0

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm/boot/dts/imx28.dtsi

@@ -434,6 +434,32 @@ MX28_PAD_ENET_CLK__CLKCTRL_ENET
 					fsl,pull-up = <MXS_PULL_ENABLE>;
 				};
 
+				mac0_pins_b: mac0@1 {
+					reg = <1>;
+					fsl,pinmux-ids = <
+						MX28_PAD_ENET0_MDC__ENET0_MDC
+						MX28_PAD_ENET0_MDIO__ENET0_MDIO
+						MX28_PAD_ENET0_RX_EN__ENET0_RX_EN
+						MX28_PAD_ENET0_RXD0__ENET0_RXD0
+						MX28_PAD_ENET0_RXD1__ENET0_RXD1
+						MX28_PAD_ENET0_RXD2__ENET0_RXD2
+						MX28_PAD_ENET0_RXD3__ENET0_RXD3
+						MX28_PAD_ENET0_TX_EN__ENET0_TX_EN
+						MX28_PAD_ENET0_TXD0__ENET0_TXD0
+						MX28_PAD_ENET0_TXD1__ENET0_TXD1
+						MX28_PAD_ENET0_TXD2__ENET0_TXD2
+						MX28_PAD_ENET0_TXD3__ENET0_TXD3
+						MX28_PAD_ENET_CLK__CLKCTRL_ENET
+						MX28_PAD_ENET0_COL__ENET0_COL
+						MX28_PAD_ENET0_CRS__ENET0_CRS
+						MX28_PAD_ENET0_TX_CLK__ENET0_TX_CLK
+						MX28_PAD_ENET0_RX_CLK__ENET0_RX_CLK
+						>;
+					fsl,drive-strength = <MXS_DRIVE_8mA>;
+					fsl,voltage = <MXS_VOLTAGE_HIGH>;
+					fsl,pull-up = <MXS_PULL_ENABLE>;
+				};
+
 				mac1_pins_a: mac1@0 {
 					reg = <0>;
 					fsl,pinmux-ids = <