ath9k uses a deprecated GPIO API that assumes a starting base of 0. This
is no longer the case and so must be fixed.
Upstream pending patch.
Signed-off-by: Rosen Penev <rosenp@gmail.com>
Link: https://github.com/openwrt/openwrt/pull/17445
Signed-off-by: Robert Marko <robimarko@gmail.com>