TOMOYO: Fix make namespacecheck warnings.

Commit efe836ab "TOMOYO: Add built-in policy support." introduced
tomoyo_load_builtin_policy() but was by error called from nowhere.

Commit b22b8b9f "TOMOYO: Rename meminfo to stat and show more statistics."
introduced tomoyo_update_stat() but was by error not called from
tomoyo_assign_domain().

Also, mark tomoyo_io_printf() and tomoyo_path_permission() static functions,
as reported by "make namespacecheck".

Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: James Morris <jmorris@namei.org>

security/tomoyo/file.c

@@ -555,8 +555,8 @@ static int tomoyo_update_path2_acl(const u8 perm,
  *
  * Caller holds tomoyo_read_lock().
  */
-int tomoyo_path_permission(struct tomoyo_request_info *r, u8 operation,
-			   const struct tomoyo_path_info *filename)
+static int tomoyo_path_permission(struct tomoyo_request_info *r, u8 operation,
+				  const struct tomoyo_path_info *filename)
 {
 	int error;