HID: logitech-hidpp: Guard FF init code against non-USB devices

The Force Feedback code assumes that all the devices passed to it will
be USB devices, but that might not be the case for emulated devices.
Guard against a crash by checking the device type before poking at USB
properties.

Cc: stable@vger.kernel.org # v5.16+
Reported-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Bastien Nocera <hadess@hadess.net>
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Link: https://lore.kernel.org/r/20221215154416.111704-1-hadess@hadess.net