Disable pen usage inputs for Huion interfaces reporting on-the-frame
buttons. We don't want to change those, as they mostly work, but we want
to avoid creation of a mute pen interface, confusing to users.
Signed-off-by: Nikolai Kondrashov <spbnick@gmail.com>
Signed-off-by: José Expósito <jose.exposito89@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>