treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 466

Based on 1 normalized pattern(s):

license__ = gpl version 2

extracted by the scancode license scanner the SPDX license identifier

GPL-2.0-only

has been chosen to add the SPDX identifier to this file.

Signed-off-by: Thomas Gleixner <[e-mail]>
Reviewed-by: Allison Randal <[e-mail]>
Reviewed-by: Enrico Weigelt <[e-mail]>
Cc: [e-mail]
Link: https://lkml.kernel.org/r/[e-mail]
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

tools/power/x86/intel_pstate_tracer/intel_pstate_tracer.py

···
 #!/usr/bin/python
+# SPDX-License-Identifier: GPL-2.0-only
 # -*- coding: utf-8 -*-
 #
 """ This utility can be used to debug and tune the performance of the