m68k: introduce asm/swab.h

Signed-off-by: NHarvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

include/asm-m68k/Kbuild

 include include/asm-generic/Kbuild.asm
 header-y += cachectl.h
+unifdef-y += swab.h

include/asm-m68k/byteorder.h

 #ifndef _M68K_BYTEORDER_H
 #define _M68K_BYTEORDER_H
 
-#include <asm/types.h>
-#include <linux/compiler.h>
-
-#define __BIG_ENDIAN
-#define __SWAB_64_THRU_32__
-
-static inline __attribute_const__ __u32 __arch_swab32(__u32 val)
-{
-	__asm__("rolw #8,%0; swap %0; rolw #8,%0" : "=d" (val) : "0" (val));
-	return val;
-}
-#define __arch_swab32 __arch_swab32
-
-#include <linux/byteorder.h>
+#include <asm/swab.h>
+#include <linux/byteorder/big_endian.h>
 
 #endif /* _M68K_BYTEORDER_H */

include/asm-m68k/swab.h

+#ifndef _M68K_SWAB_H
+#define _M68K_SWAB_H
+
+#include <asm/types.h>
+#include <linux/compiler.h>
+
+#define __SWAB_64_THRU_32__
+
+static inline __attribute_const__ __u32 __arch_swab32(__u32 val)
+{
+	__asm__("rolw #8,%0; swap %0; rolw #8,%0" : "=d" (val) : "0" (val));
+	return val;
+}
+#define __arch_swab32 __arch_swab32
+
+#endif /* _M68K_SWAB_H */