Before commit 534a7b8e ("HID: Add full support for Logitech Unifying
receivers") Logitech Unifying receiver can work as generic device
without special driver, after that commit these devices does not works
without special driver.

After this patch they will use generic driver if special driver is disabled.
Signed-off-by: NKonstantin Khlebnikov <khlebnikov@openvz.org>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>