Quite some files have been flagged with the new GPL-2.0-only and
GPL-2.0-or-later identifiers which replace the original GPL-2.0 and
GPL-2.0+ identifiers in the SPDX license identifier specification, but the
identifiers are not mentioned as valid in the GPL-2.0 license file.
Add them to the license file and to the Linux-syscall-note exception to
make everything consistent again.
Signed-off-by: Thomas Gleixner <email@example.com>
Reviewed-by: Greg Kroah-Hartman <firstname.lastname@example.org>
Reviewed-by: Mauro Carvalho Chehab <email@example.com>
Cc: Hans Verkuil <firstname.lastname@example.org>
Signed-off-by: Jonathan Corbet <email@example.com>