cleanup asm-generic/atomic.h
 - no longer a userspace header
 - remove the unneeded #include <asm/types.h>
 - #else/#endif comments
[akpm@osdl.org: fix arm build]
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
-header-y += atomic.h
 header-y += errno-base.h
 header-y += errno.h
 header-y += fcntl.h
 
        atomic64_sub(i, v);
 }
 
-#else
+#else  /*  BITS_PER_LONG == 64  */
 
 typedef atomic_t atomic_long_t;
 
        atomic_sub(i, v);
 }
 
-#endif
-#endif
+#endif  /*  BITS_PER_LONG == 64  */
+
+#endif  /*  _ASM_GENERIC_ATOMIC_H  */