treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 249

Based on 1 normalized pattern(s):

  as all part of the linux kernel this file is gpl

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-only

has been chosen to replace the boilerplate/reference in 4 file(s).

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

4 files changed