USB: cp2101: new device id

This adds a device ID for the Aerocomm Radio Modem, which uses the
cp2102.  I'm sure changing num_bulk_in/num_bulk_out to NUM_DONT_CARE
is the wrong fix, but this is the only device I have with a cp2102,
so I have no idea what a good global value would be, if there is one.
Zero didn't work with this device.

From: Jeff Long <JeffLong@mitre.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>