treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 200

Based on 1 normalized pattern(s):

this code is licenced under the general public licence version 2

and additional 1 normalized pattern(s):

this program is free software you can redistribute it and or modify it
under the terms of version 2 of the gnu general public license as
published by the free software foundation this program is distributed in
the hope that it will be useful but without any warranty without even the
implied warranty of merchantability or fitness for a particular purpose
see the gnu general public license for more details you should have
received a copy of the gnu general public license along with this
program; if not write to the free software foundation inc 59 temple place
suite 330 boston ma 02111-1307 usa

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: Steve Winslow <swinslow@gmail.com>
Reviewed-by: Alexios Zavras <alexios.zavras@intel.com>
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190528170028.004542325@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>