treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 426

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 426

Based on 1 normalized pattern(s):

  this software may be used and distributed according to the terms of
  the gnu general public license version 2 incorporated herein by
  reference

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-only

has been chosen to replace the boilerplate/reference in 5 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/20190531190114.200440917@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>