treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_385.RULE

Based on the normalized pattern:

licensed under the gpl v2

extracted by the scancode license scanner the SPDX license identifier

GPL-2.0-only

has been chosen to replace the boilerplate/reference.

Reviewed-by: Allison Randal <[e-mail]>
Signed-off-by: Thomas Gleixner <[e-mail]>
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

arch/sparc/vdso/vdso2c.c

···
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * vdso2c - A vdso image preparation tool
  * Copyright (c) 2014 Andy Lutomirski and others
- * Licensed under the GPL v2
  *
  * vdso2c requires stripped and unstripped input.  It would be trivial
  * to fully strip the input in here, but, for reasons described below,

arch/x86/entry/vdso/vdso2c.c

···
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * vdso2c - A vdso image preparation tool
  * Copyright (c) 2014 Andy Lutomirski and others
- * Licensed under the GPL v2
  *
  * vdso2c requires stripped and unstripped input.  It would be trivial
  * to fully strip the input in here, but, for reasons described below,

scripts/gcc-plugins/latent_entropy_plugin.c

···
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Copyright 2012-2016 by the PaX Team <[e-mail]>
  * Copyright 2016 by Emese Revfy <[e-mail]>
- * Licensed under the GPL v2
  *
  * Note: the choice of the license means that the compilation process is
  *       NOT 'eligible' as defined by gcc's library exception to the GPL v3,

scripts/gcc-plugins/stackleak_plugin.c

···
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Copyright 2011-2017 by the PaX Team <[e-mail]>
  * Modified by Alexander Popov <[e-mail]>
- * Licensed under the GPL v2
  *
  * Note: the choice of the license means that the compilation process is
  * NOT 'eligible' as defined by gcc's library exception to the GPL v3,

scripts/gcc-plugins/structleak_plugin.c

···
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Copyright 2013-2017 by PaX Team <[e-mail]>
- * Licensed under the GPL v2
  *
  * Note: the choice of the license means that the compilation process is
  *       NOT 'eligible' as defined by gcc's library exception to the GPL v3,

tools/power/cpupower/debug/i386/dump_psb.c

···
-/*
- * dump_psb. (c) 2004, Dave Jones, Red Hat Inc.
- * Licensed under the GPL v2.
- */
+// SPDX-License-Identifier: GPL-2.0-only
+// dump_psb. (c) 2004, Dave Jones, Red Hat Inc.
 
 #include <fcntl.h>
 #include <stdio.h>