constify security_path_chroot()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/include/linux/security.h b/include/linux/security.h
index 8285411..cb53cff 100644
--- a/include/linux/security.h
+++ b/include/linux/security.h
@@ -1457,7 +1457,7 @@
 			 unsigned int flags);
 int security_path_chmod(const struct path *path, umode_t mode);
 int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid);
-int security_path_chroot(struct path *path);
+int security_path_chroot(const struct path *path);
 #else	/* CONFIG_SECURITY_PATH */
 static inline int security_path_unlink(const struct path *dir, struct dentry *dentry)
 {
@@ -1518,7 +1518,7 @@
 	return 0;
 }
 
-static inline int security_path_chroot(struct path *path)
+static inline int security_path_chroot(const struct path *path)
 {
 	return 0;
 }