media: rc: add include guard to rc-map.h

Add a header include guard just in case.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>

include/media/rc-map.h

@@ -5,6 +5,9 @@
  * Copyright (c) 2010 by Mauro Carvalho Chehab
  */
 
+#ifndef _MEDIA_RC_MAP_H
+#define _MEDIA_RC_MAP_H
+
 #include <linux/input.h>
 #include <uapi/linux/lirc.h>
 
@@ -274,3 +277,5 @@ struct rc_map *rc_map_get(const char *name);
  * Please, do not just append newer Remote Controller names at the end.
  * The names should be ordered in alphabetical order
  */
+
+#endif /* _MEDIA_RC_MAP_H */