treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 481

Based on 1 normalized pattern(s):

  use of this source code is governed by the gplv2 license

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-only

has been chosen to replace the boilerplate/reference in 2 file(s).
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
Reviewed-by: NEnrico Weigelt <info@metux.net>
Reviewed-by: NAllison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190604081204.507272547@linutronix.deSigned-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

tools/testing/selftests/kselftest_harness.h

+/* SPDX-License-Identifier: GPL-2.0-only */
 /*
  * Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
- * Use of this source code is governed by the GPLv2 license.
  *
  * kselftest_harness.h: simple C unit test helper.
  *

tools/testing/selftests/seccomp/seccomp_bpf.c

+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
- * Use of this source code is governed by the GPLv2 license.
  *
  * Test code for seccomp bpf.
  */