arm/imx/iomux-mx3.h: unify style and comments

- use __MACH_IOMUX_MX3_H__ as header protector analogous to
  <mach/mx...h>
- use tabs for indention
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>

arch/arm/plat-mxc/include/mach/iomux-mx3.h

@@ -16,12 +16,10 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
  * MA 02110-1301, USA.
  */
-
-#ifndef __MACH_MX31_IOMUX_H__
-#define __MACH_MX31_IOMUX_H__
+#ifndef __MACH_IOMUX_MX3_H__
+#define __MACH_IOMUX_MX3_H__
 
 #include <linux/types.h>
-
 /*
  * various IOMUX output functions
  */
@@ -727,13 +725,14 @@ enum iomux_pins {
 #define MX31_PIN_SCK5__SCK5		IOMUX_MODE(MX31_PIN_SCK5, IOMUX_CONFIG_FUNC)
 #define MX31_PIN_SFS5__SFS5		IOMUX_MODE(MX31_PIN_SFS5, IOMUX_CONFIG_FUNC)
 
-/*XXX: The SS0, SS1, SS2, SS3 lines of spi3 are multiplexed by cspi2_ss0, cspi2_ss1, cspi1_ss0
- * cspi1_ss1*/
+/*
+ * XXX: The SS0, SS1, SS2, SS3 lines of spi3 are multiplexed with cspi2_ss0,
+ * cspi2_ss1, cspi1_ss0 cspi1_ss1
+ */
 
 /*
  * This function configures the pad value for a IOMUX pin.
  */
 void mxc_iomux_set_pad(enum iomux_pins, u32);
 
-#endif
-
+#endif /* ifndef __MACH_IOMUX_MX3_H__ */