Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/fs/coda/Kconfig b/fs/coda/Kconfig
index c0e5a7f..ae6759f 100644
--- a/fs/coda/Kconfig
+++ b/fs/coda/Kconfig
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0-only
 config CODA_FS
 	tristate "Coda file system support (advanced network fs)"
 	depends on INET