MX5: Add iomux structure

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
diff --git a/arch/arm/include/asm/arch-mx5/imx-regs.h b/arch/arm/include/asm/arch-mx5/imx-regs.h
index e136607..1dac6fa 100644
--- a/arch/arm/include/asm/arch-mx5/imx-regs.h
+++ b/arch/arm/include/asm/arch-mx5/imx-regs.h
@@ -358,6 +358,29 @@
 	u32	ear;
 };
 
+#if defined(CONFIG_MX51)
+struct iomuxc {
+	u32	gpr0;
+	u32	gpr1;
+	u32	omux0;
+	u32	omux1;
+	u32	omux2;
+	u32	omux3;
+	u32	omux4;
+};
+#elif defined(CONFIG_MX53)
+struct iomuxc {
+	u32	gpr0;
+	u32	gpr1;
+	u32	gpr2;
+	u32	omux0;
+	u32	omux1;
+	u32	omux2;
+	u32	omux3;
+	u32	omux4;
+};
+#endif
+
 /* GPIO Registers */
 struct gpio_regs {
 	u32	gpio_dr;