USB: Additional PID for the ftdi_sio driver

Here's a short patch which adds one PID to the set of devices
supported by the ftdi_sio driver.  The device in question is a
DLP module used as part of a ham radio USB-to-packet adapter.

From: Dave Platt <dplatt@radagast.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>