If a USB keyboard like the YubiKey is found before the internal keyboard, it
will be paired with the touchpad when it is seen. The internal keyboard is
seen later bug ignored because we already have a keyboard paired with the
touchpad.

This is obviously wrong. For now, give priority to serio keyboards, and
override existing dwt pairings with the new keyboard.

https://bugs.freedesktop.org/show_bug.cgi?id=93983



Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>