Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/drivers/misc/cb710/Kconfig b/drivers/misc/cb710/Kconfig
index 22429b8..a696d75 100644
--- a/drivers/misc/cb710/Kconfig
+++ b/drivers/misc/cb710/Kconfig
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0-only
 config CB710_CORE
 	tristate "ENE CB710/720 Flash memory card reader support"
 	depends on PCI
@@ -14,7 +15,6 @@
 config CB710_DEBUG
 	bool "Enable driver debugging"
 	depends on CB710_CORE != n
-	default n
 	help
 	  This is an option for use by developers; most people should
 	  say N here.  This adds a lot of debugging output to dmesg.