imx: properly protect mach/mx{1,[25][157x]}.h from multiple inclusion

Some headers have used (now) wrong names or havn't had protection at
all.  This is needed before adding static inline functions to the
headers.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Cc: Sascha Hauer <kernel@pengutronix.de>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Magnus Lilja <lilja.magnus@gmail.com>
Cc: Holger Schurig <hs4233@mail.mn-solutions.de>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Daniel Mack <daniel@caiaq.de>
diff --git a/arch/arm/plat-mxc/include/mach/mx3x.h b/arch/arm/plat-mxc/include/mach/mx3x.h
index 5ae0b00..7a356de3 100644
--- a/arch/arm/plat-mxc/include/mach/mx3x.h
+++ b/arch/arm/plat-mxc/include/mach/mx3x.h
@@ -8,8 +8,8 @@
  * published by the Free Software Foundation.
  */
 
-#ifndef __ASM_ARCH_MXC_MX31_H__
-#define __ASM_ARCH_MXC_MX31_H__
+#ifndef __MACH_MX3x_H__
+#define __MACH_MX3x_H__
 
 /*
  * MX31 memory map:
@@ -404,4 +404,4 @@
 #define SYSTEM_REV_NUM MX3x_SYSTEM_REV_NUM
 #endif
 
-#endif /*  __ASM_ARCH_MXC_MX31_H__ */
+#endif /* ifndef __MACH_MX3x_H__ */