Add a SPDX-License-Identifier to the 88PM80x onkey driver and drop the
GPL boilerplate in accordance with current kernel code guidelines.
Signed-off-by: Duje Mihanović <duje.mihanovic@skole.hr>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20240121-88pm80x-onkey-spdx-v1-1-b646d4749f5b@skole.hrSigned-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>