Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/kernel/time/posix-clock.c b/kernel/time/posix-clock.c
index fe56c4e..ec960bb 100644
--- a/kernel/time/posix-clock.c
+++ b/kernel/time/posix-clock.c
@@ -1,21 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
- * posix-clock.c - support for dynamic clock devices
+ * Support for dynamic clock devices
  *
  * Copyright (C) 2010 OMICRON electronics GmbH
- *
- *  This program is free software; you can redistribute it and/or modify
- *  it under the terms of the GNU General Public License as published by
- *  the Free Software Foundation; either version 2 of the License, or
- *  (at your option) any later version.
- *
- *  This program is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *  GNU General Public License for more details.
- *
- *  You should have received a copy of the GNU General Public License
- *  along with this program; if not, write to the Free Software
- *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  */
 #include <linux/device.h>
 #include <linux/export.h>
@@ -241,7 +228,7 @@
 	fput(cd->fp);
 }
 
-static int pc_clock_adjtime(clockid_t id, struct timex *tx)
+static int pc_clock_adjtime(clockid_t id, struct __kernel_timex *tx)
 {
 	struct posix_clock_desc cd;
 	int err;