This patch adds support for Elo TouchSystems 2515 IntelliTouch Plus
that can be found in Lenovo A700 all-in-one.
Signed-off-by: NBenjamin Tissoires <benjamin.tissoires@enac.fr>
Tested-by: NBastien Nocera <hadess@hadess.net>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>