ARM: remove redundant asmlinkage define

Use asmlinkage defined in include/linux/linkage.h if necessary.
Actually no ARM board uses asmlinkage, so this commit has no impact.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Cc: Albert ARIBAUD <albert.u.boot@aribaud.net>

include/common.h

@@ -70,9 +70,6 @@ typedef volatile unsigned char	vu_char;
 #ifdef	CONFIG_4xx
 #include <asm/ppc4xx.h>
 #endif
-#ifdef CONFIG_ARM
-#define asmlinkage	/* nothing */
-#endif
 #ifdef CONFIG_BLACKFIN
 #include <asm/blackfin.h>
 #endif