treewide: Replace GPLv2/OpenIB boilerplate with SPDX - rule 4

Based on 1 normalized pattern(s):

  this software is available to you under a choice of one of two
  licenses you may choose to be licensed under the terms of the gnu
  general public license gpl version 2 available from the file copying
  in the main directory of this source tree or the openib org bsd
  license below redistribution and use in source and binary forms with
  or without modification are permitted provided that the following
  conditions are met redistributions of source code must retain the
  above copyright notice this list of conditions and the following
  disclaimer redistributions in binary form must reproduce the above
  copyright notice this list of conditions and the following
  disclaimer in the documentation and or other materials provided with
  the distribution the software is provided as is without warranty of
  any kind express or implied including but not limited to the
  warranties of merchantability fitness for a particular purpose and
  noninfringement in no event shall the authors or copyright holders
  be liable for any claim damages or other liability whether in an
  action of contract tort or otherwise arising from out of or in
  connection with the software or the use or other dealings in the
  software



extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-only or Linux-OpenIB

has been chosen to replace the boilerplate/reference in 663 file(s).

The result has been manually verified and compared against a license
compliance dataset provided by ....

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>