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>
diff --git a/include/common.h b/include/common.h
index 4f2f303..80c3486 100644
--- a/include/common.h
+++ b/include/common.h
@@ -70,9 +70,6 @@
 #ifdef	CONFIG_4xx
 #include <asm/ppc4xx.h>
 #endif
-#ifdef CONFIG_ARM
-#define asmlinkage	/* nothing */
-#endif
 #ifdef CONFIG_BLACKFIN
 #include <asm/blackfin.h>
 #endif