Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/drivers/misc/mei/Kconfig b/drivers/misc/mei/Kconfig
index c49e1d2..9d7b371 100644
--- a/drivers/misc/mei/Kconfig
+++ b/drivers/misc/mei/Kconfig
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0
+# Copyright (c) 2003-2019, Intel Corporation. All rights reserved.
 config INTEL_MEI
 	tristate "Intel Management Engine Interface"
 	depends on X86 && PCI
@@ -43,3 +45,5 @@
 
 	  Supported SoCs:
 	  Intel Bay Trail
+
+source "drivers/misc/mei/hdcp/Kconfig"