vfs, seqfile: export mangle_path() generally

mangle_path() is trivial enough to make  export restrictions on it
pointless - so change the export from EXPORT_SYMBOL_GPL to EXPORT_SYMBOL.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Al Viro <viro@ZenIV.linux.org.uk>

fs/seq_file.c

@@ -387,7 +387,7 @@ char *mangle_path(char *s, char *p, char *esc)
 	}
 	return NULL;
 }
-EXPORT_SYMBOL_GPL(mangle_path);
+EXPORT_SYMBOL(mangle_path);
 
 /*
  * return the absolute path of 'dentry' residing in mount 'mnt'.