treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 54

Based on 1 normalized pattern(s):

  this program is a part of the linux kernel and may be freely copied
  under the terms of the gnu general public license gpl version 2 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: Allison Randal <allison@lohutok.net>
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190520071858.118952876@linutronix.deSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

scripts/conmakehash.c

+// SPDX-License-Identifier: GPL-2.0-or-later
 /*
  * conmakehash.c
  *
@@ -8,10 +9,6 @@
  * just for this seems like massive overkill.
  *
  * Copyright (C) 1995-1997 H. Peter Anvin
- *
- * This program is a part of the Linux kernel, and may be freely
- * copied under the terms of the GNU General Public License (GPL),
- * version 2, or at your option any later version.
  */
 
 #include <stdio.h>