Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/include/linux/fips.h b/include/linux/fips.h
index afeeece..c6961e9 100644
--- a/include/linux/fips.h
+++ b/include/linux/fips.h
@@ -4,8 +4,15 @@
 
 #ifdef CONFIG_CRYPTO_FIPS
 extern int fips_enabled;
+extern struct atomic_notifier_head fips_fail_notif_chain;
+
+void fips_fail_notify(void);
+
 #else
 #define fips_enabled 0
+
+static inline void fips_fail_notify(void) {}
+
 #endif
 
 #endif