treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 373

Based on 1 normalized pattern(s):

  this program file is free software you can redistribute it and or
  modify it under the terms of the gnu general public license as
  published by the free software foundation version 2 of the license

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-only

has been chosen to replace the boilerplate/reference in 1 file(s).
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Armijn Hemel <armijn@tjaldur.nl>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190531081036.527324761@linutronix.deSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

scripts/markup_oops.pl

 #!/usr/bin/env perl
+# SPDX-License-Identifier: GPL-2.0-only
 
 use File::Basename;
 use Math::BigInt;
@@ -8,10 +9,6 @@ use Getopt::Long;
 #
 # This file is part of the Linux kernel
 #
-# This program file is free software; you can redistribute it and/or modify it
-# under the terms of the GNU General Public License as published by the
-# Free Software Foundation; version 2 of the License.
-#
 # Authors:
 # 	Arjan van de Ven <arjan@linux.intel.com>