constify chmod_common/security_path_chmod

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/include/linux/lsm_hooks.h b/include/linux/lsm_hooks.h
index 4711775..294fdfe 100644
--- a/include/linux/lsm_hooks.h
+++ b/include/linux/lsm_hooks.h
@@ -1374,7 +1374,7 @@
 	int (*path_rename)(struct path *old_dir, struct dentry *old_dentry,
 				struct path *new_dir,
 				struct dentry *new_dentry);
-	int (*path_chmod)(struct path *path, umode_t mode);
+	int (*path_chmod)(const struct path *path, umode_t mode);
 	int (*path_chown)(const struct path *path, kuid_t uid, kgid_t gid);
 	int (*path_chroot)(struct path *path);
 #endif