HID: multitouch: add FocalTech FTxxxx support

This is a Win7 device which does not work correctly with the default
settings (not the previous default BT).
However, the quirk ALWAYS_TRUE makes it working like a charm.

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>