Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/include/net/fq.h b/include/net/fq.h
index ac944a6..2ad85e6 100644
--- a/include/net/fq.h
+++ b/include/net/fq.h
@@ -1,8 +1,7 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
 /*
  * Copyright (c) 2016 Qualcomm Atheros, Inc
  *
- * GPL v2
- *
  * Based on net/sched/sch_fq_codel.c
  */
 #ifndef __NET_SCHED_FQ_H
@@ -70,7 +69,7 @@
 	struct list_head backlogs;
 	spinlock_t lock;
 	u32 flows_cnt;
-	u32 perturbation;
+	siphash_key_t	perturbation;
 	u32 limit;
 	u32 memory_limit;
 	u32 memory_usage;