HID: logitech-dj: pick a better name for non-unifying receivers

hidpp_unifying_get_name() does not work for devices attached to
non-unifying receivers. Since we do get a device-type in the device-
connection report, we can pick a better name for these devices in
hid-logitech-dj.c .

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>