HID: logitech-hidpp: Add Bluetooth ID for the Logitech M720 Triathlon mouse

Using hidpp for the M720 adds battery info reporting and hires
scrolling support.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Bastien Nocera <hadess@hadess.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>