Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/drivers/pinctrl/sirf/pinctrl-sirf.h b/drivers/pinctrl/sirf/pinctrl-sirf.h
index 9550335..d7125b8 100644
--- a/drivers/pinctrl/sirf/pinctrl-sirf.h
+++ b/drivers/pinctrl/sirf/pinctrl-sirf.h
@@ -1,9 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 /*
  * pinmux driver shared headfile for CSR SiRFsoc
  *
  * Copyright (c) 2011 Cambridge Silicon Radio Limited, a CSR plc group company.
- *
- * Licensed under GPLv2 or later.
  */
 
 #ifndef __PINMUX_SIRF_H__