treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 84

Based on 1 normalized pattern(s):

  this program 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 either version 2 of the license or at
  your option any later version author [bill] [dirks]
  [bill]@[thedirks] [org] [based] [on] [code] [by] [alan] [cox]
  [alan]@[cymru] [net] video capture interface for linux a generic
  video device interface for the linux operating system using a set of
  device structures vectors for low level operations this program 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 either version 2 of the license or at your
  option any later version

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 1 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Richard Fontana <rfontana@redhat.com>
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/20190520075211.410073327@linutronix.de


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>