eventcomm: ignore fake and broken MT devices
eventcomm: ignore fake and broken MT devices

An MT device without X/Y is not a touchpad. And neither are fake MT devices.

Signed-off-by: Peter Hutterer <b9c50af7afa7642f6f854434cda9ffe54ece8b85@who-t.net>
Reviewed-by: Hans de Goede <9fa1be1a5b5729e4c6b404f34c9ce49ff4882fd8@redhat.com>

mad-s/xf86-input-synaptics-absolute,mad-s/xf86-input-synaptics-absolute