ARM: dts: imx25-pdk: Add UART1 pins

UART1 is the console port on mx25pdk board.

Add the pin configuration for UART1 port and also pass 'fsl,uart-has-rtscts'
to indicate that the port has RTS and CTS pins.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>

arch/arm/boot/dts/imx25-pdk.dts

@@ -26,11 +26,27 @@ &fec {
 	status = "okay";
 };
 
+&iomuxc {
+	imx25-pdk {
+		pinctrl_uart1: uart1grp {
+			fsl,pins = <
+				MX25_PAD_UART1_RTS__UART1_RTS		0xe0
+				MX25_PAD_UART1_CTS__UART1_CTS		0xe0
+				MX25_PAD_UART1_TXD__UART1_TXD		0x80000000
+				MX25_PAD_UART1_RXD__UART1_RXD		0xc0
+			>;
+		};
+	};
+};
+
 &nfc {
 	nand-on-flash-bbt;
 	status = "okay";
 };
 
 &uart1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_uart1>;
+	fsl,uart-has-rtscts;
 	status = "okay";
 };