Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/net/tipc/socket.h b/net/tipc/socket.h
index 5e575f2..235b967 100644
--- a/net/tipc/socket.h
+++ b/net/tipc/socket.h
@@ -71,4 +71,8 @@
 int tipc_dump_start(struct netlink_callback *cb);
 int __tipc_dump_start(struct netlink_callback *cb, struct net *net);
 int tipc_dump_done(struct netlink_callback *cb);
+u32 tipc_sock_get_portid(struct sock *sk);
+bool tipc_sk_overlimit1(struct sock *sk, struct sk_buff *skb);
+bool tipc_sk_overlimit2(struct sock *sk, struct sk_buff *skb);
+
 #endif