Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/tools/testing/ktest/config-bisect.pl b/tools/testing/ktest/config-bisect.pl
index b28feea..6fd8649 100755
--- a/tools/testing/ktest/config-bisect.pl
+++ b/tools/testing/ktest/config-bisect.pl
@@ -1,10 +1,9 @@
 #!/usr/bin/perl -w
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright 2015 - Steven Rostedt, Red Hat Inc.
 # Copyright 2017 - Steven Rostedt, VMware, Inc.
 #
-# Licensed under the terms of the GNU GPL License version 2
-#
 
 # usage:
 #  config-bisect.pl [options] good-config bad-config [good|bad]
@@ -664,7 +663,7 @@
     }
 
     else {
-	die "Unknow option $opt\n";
+	die "Unknown option $opt\n";
     }
 }
 
@@ -733,7 +732,7 @@
 	}
     }
     run_command "cp $good_start $good" or die "failed to copy to $good\n";
-    run_command "cp $bad_start $bad" or die "faield to copy to $bad\n";
+    run_command "cp $bad_start $bad" or die "failed to copy to $bad\n";
 } else {
     if ( ! -f $good ) {
 	die "Can not find file $good\n";