arm/imx/iomux-mx25: unify style and comment cleanup

- use __MACH_IOMUX_MX25_H__ as header protector analogous to
  <mach/mx...h>
- remove doxygen comments
- remove #error about mach/iomux.h which is unused on mx25
- remove #ifndef __ASSEMBLY__ which is unneeded here

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>

arch/arm/plat-mxc/include/mach/iomux-mx25.h

@@ -16,24 +16,11 @@
  * http://www.opensource.org/licenses/gpl-license.html
  * http://www.gnu.org/copyleft/gpl.html
  */
-#ifndef __IOMUX_MX25_H__
-#define __IOMUX_MX25_H__
+#ifndef __MACH_IOMUX_MX25_H__
+#define __MACH_IOMUX_MX25_H__
 
 #include <mach/iomux-v3.h>
 
-#ifndef GPIO_PORTA
-#error Please include mach/iomux.h
-#endif
-
-/*
- *
- * @brief MX25 I/O Pin List
- *
- * @ingroup GPIO_MX25
- */
-
-#ifndef __ASSEMBLY__
-
 /*
  * IOMUX/PAD Bit field definitions
  */
@@ -513,5 +500,4 @@
 #define MX25_PAD_CTL_GRP_DVS_SDHC1	IOMUX_PAD(0x458, 0x000, 0, 0, 0, NO_PAD_CTRL)
 #define MX25_PAD_CTL_GRP_DVS_LCD	IOMUX_PAD(0x45c, 0x000, 0, 0, 0, NO_PAD_CTRL)
 
-#endif // __ASSEMBLY__
-#endif // __IOMUX_MX25_H__
+#endif /* __MACH_IOMUX_MX25_H__ */