ARM: imx23-olinuxino: Add spi support

imx23-olinuxino board has spi pins exposed on external connector.
This patch add spi support.
Signed-off-by: NFadil Berisha <f.koliqi@gmail.com>
Signed-off-by: NFabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: NShawn Guo <shawn.guo@linaro.org>

arch/arm/boot/dts/imx23-olinuxino.dts

@@ -56,6 +56,15 @@
 					fsl,pull-up = <0>;
 				};
 			};
+
+			ssp1: ssp@80034000 {
+				#address-cells = <1>;
+				#size-cells = <0>;
+				compatible = "fsl,imx23-spi";
+				pinctrl-names = "default";
+				pinctrl-0 = <&spi2_pins_a>;
+				status = "okay";
+			};
 		};
 
 		apbx@80040000 {

arch/arm/boot/dts/imx23.dtsi

@@ -278,6 +278,19 @@
 					fsl,voltage = <1>;
 					fsl,pull-up = <0>;
 				};
+
+				spi2_pins_a: spi2@0 {
+					reg = <0>;
+					fsl,pinmux-ids = <
+						0x0182 /* MX23_PAD_GPMI_WRN__SSP2_SCK */
+						0x0142 /* MX23_PAD_GPMI_RDY1__SSP2_CMD */
+						0x0002 /* MX23_PAD_GPMI_D00__SSP2_DATA0 */
+						0x0032 /* MX23_PAD_GPMI_D03__SSP2_DATA3 */
+					>;
+					fsl,drive-strength = <1>;
+					fsl,voltage = <1>;
+					fsl,pull-up = <1>;
+				};
 			};
 
 			digctl@8001c000 {