USB: New device PID for ftdi_sio driver

Hello,

I need to use MaxStream's PKG-U modules which includes a ftdi sio chipset for
usb2serial communication, here are the patches for handling Maxstream's modules.

The VID & PID to use with the open-source driver are provided on the CD-ROM
bundled with the modules.

From: Neil Superna ARMSTRONG <superna@na-prod.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c
index 95a1805..9200edc 100644
--- a/drivers/usb/serial/ftdi_sio.c
+++ b/drivers/usb/serial/ftdi_sio.c
@@ -525,6 +525,7 @@
 	{ USB_DEVICE(FTDI_VID, FTDI_TACTRIX_OPENPORT_13U_PID) },
 	{ USB_DEVICE(ELEKTOR_VID, ELEKTOR_FT323R_PID) },
 	{ USB_DEVICE(TELLDUS_VID, TELLDUS_TELLSTICK_PID) },
+	{ USB_DEVICE(FTDI_VID, FTDI_MAXSTREAM_PID) },
 	{ },					/* Optional parameter entry */
 	{ }					/* Terminating entry */
 };