Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/drivers/parport/Kconfig b/drivers/parport/Kconfig
index a97f4ea..1791830 100644
--- a/drivers/parport/Kconfig
+++ b/drivers/parport/Kconfig
@@ -1,6 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # For a description of the syntax of this configuration file,
-# see Documentation/kbuild/kconfig-language.txt.
+# see Documentation/kbuild/kconfig-language.rst.
 #
 # Parport configuration.
 #