Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/scripts/kconfig/nconf.h b/scripts/kconfig/nconf.h
index 2b9e19f..fa5245e 100644
--- a/scripts/kconfig/nconf.h
+++ b/scripts/kconfig/nconf.h
@@ -1,9 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
- * Copyright (C) 2008 Nir Tzachar <nir.tzachar@gmail.com?
- * Released under the terms of the GNU GPL v2.0.
+ * Copyright (C) 2008 Nir Tzachar <nir.tzachar@gmail.com>
  *
  * Derived from menuconfig.
- *
  */
 
 #include <ctype.h>