treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 339

Based on 1 normalized pattern(s):

  released under gplv2

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: Alexios Zavras <alexios.zavras@intel.com>
Reviewed-by: Armijn Hemel <armijn@tjaldur.nl>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190530000436.946199729@linutronix.deSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

scripts/extract_xc3028.pl

 #!/usr/bin/env perl
+# SPDX-License-Identifier: GPL-2.0-only
 
 # Copyright (c) Mauro Carvalho Chehab <mchehab@kernel.org>
-# Released under GPLv2
 #
 # In order to use, you need to:
 #	1) Download the windows driver with something like: