constify security_sb_mount()

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 84f76cb..4711775 100644
--- a/include/linux/lsm_hooks.h
+++ b/include/linux/lsm_hooks.h
@@ -1343,7 +1343,7 @@
 	int (*sb_kern_mount)(struct super_block *sb, int flags, void *data);
 	int (*sb_show_options)(struct seq_file *m, struct super_block *sb);
 	int (*sb_statfs)(struct dentry *dentry);
-	int (*sb_mount)(const char *dev_name, struct path *path,
+	int (*sb_mount)(const char *dev_name, const struct path *path,
 			const char *type, unsigned long flags, void *data);
 	int (*sb_umount)(struct vfsmount *mnt, int flags);
 	int (*sb_pivotroot)(struct path *old_path, struct path *new_path);