* add GPL license because of alsa-state-init file
* gpl link points to gpl3, but at time of adding this file was actually
pointing to gpl2, so should correspond to SPDX GPL-2.0-or-later
* remove date as the file was already changed several times since then
(From OE-Core rev: ca73ff0d9930d545ce8cb8a62e259c0b43310f99)
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>