Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/drivers/crypto/qat/Kconfig b/drivers/crypto/qat/Kconfig
index ce3cae4..6ab7e5a 100644
--- a/drivers/crypto/qat/Kconfig
+++ b/drivers/crypto/qat/Kconfig
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0-only
 config CRYPTO_DEV_QAT
 	tristate
 	select CRYPTO_AEAD