Input: ALPS - add touchstick support for SS5 hardware

Add touchstick support for the so-called SS5 hardware, which uses a
variant of the SS4 protocol.

Reviewed-by: Pali Rohár <pali.rohar@gmail.com>
Tested-by: Michal Hocko <mhocko@suse.com>
Signed-off-by: Ben Gamari <ben@smart-cactus.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>