Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/include/uapi/linux/auto_fs.h b/include/uapi/linux/auto_fs.h
index df31aa9..1f7925a 100644
--- a/include/uapi/linux/auto_fs.h
+++ b/include/uapi/linux/auto_fs.h
@@ -23,7 +23,7 @@
 #define AUTOFS_MIN_PROTO_VERSION	3
 #define AUTOFS_MAX_PROTO_VERSION	5
 
-#define AUTOFS_PROTO_SUBVERSION		3
+#define AUTOFS_PROTO_SUBVERSION		5
 
 /*
  * The wait_queue_token (autofs_wqt_t) is part of a structure which is passed