USB: ftdi_sio: Add support for Newport CONEX motor drivers

Here are two more devices that use FTDI USB-to-serial chips with new product ID's.

The devices are the Newport Conex-AGP and Conex-CC motor controllers.
(http://www.newport.com/CONEX-AGP-Integrated-Piezo-Motor-Rotation-Stages-/987623/1033/info.aspx)
(http://www.newport.com/CONEX-CC-DC-Servo-Controller-Actuators/934114/1033/info.aspx

)

usb-devices command yields:

P:  Vendor=104d ProdID=3002 Rev=06.00
S:  Manufacturer=Newport
S:  Product=CONEX-CC

as well as

P:  Vendor=104d ProdID=3006 Rev=06.00
S:  Manufacturer=Newport
S:  Product=CONEX-AGP

Signed-off-by: Andrew Gomella <andrew.gomella@nih.gov>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>