Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/drivers/media/pci/ddbridge/ddbridge-hw.c b/drivers/media/pci/ddbridge/ddbridge-hw.c
index f3cbac0..f9c91bd 100644
--- a/drivers/media/pci/ddbridge/ddbridge-hw.c
+++ b/drivers/media/pci/ddbridge/ddbridge-hw.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * ddbridge-hw.c: Digital Devices bridge hardware maps
  *
@@ -13,7 +14,6 @@
  * 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.
- *
  */
 
 #include "ddbridge.h"