util/x86simdgen: update with the copyright header

Matching update done in https://github.com/opendcdiag/opendcdiag/pull/78

Change-Id: I5ff8e16fcdcb4ffd9ab6fffd16ec02591cb5ed70
Reviewed-by: Jörg Bornemann <joerg.bornemann@qt.io>

util/x86simdgen/3rdparty/x86simd_generate.pl

@@ -1,5 +1,6 @@
 #!/usr/bin/env perl
 
+# Copyright 2022 Intel Corporation.
 # SPDX-License-Identifier: Apache-2.0
 
 use strict;