USB: serial: qcserial: add pid/vid for Sierra Wireless EM7355 fw update

Add USB PID/VID for Sierra Wireless EM7355 LTE modem QDL firmware update
mode.

Signed-off-by: Douglas Fischer <douglas.fischer@outlook.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>