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>
diff --git a/security/tomoyo/securityfs_if.c b/security/tomoyo/securityfs_if.c
index d08296a..2672ac4 100644
--- a/security/tomoyo/securityfs_if.c
+++ b/security/tomoyo/securityfs_if.c
@@ -265,6 +265,7 @@
 			    TOMOYO_VERSION);
 	securityfs_create_file("self_domain", 0666, tomoyo_dir, NULL,
 			       &tomoyo_self_operations);
+	tomoyo_load_builtin_policy();
 	return 0;
 }