Galileo ftdio_sio.ko module or SD linux image with ftdi_sio module integrated

Hello everybody, I'm using a Galileo board first generation and I'd like to link it to my CC2530 device through USB cable.

When I look into my modules, this is what I can see:

root@clanton:/lib/modules/3.8.7-yocto-standard/kernel/drivers/usb/serial# ls -l

-rw-r--r--    1 root     root         15052 May 14  2014 pl2303.ko

-rw-r--r--    1 root     root         30004 May 14  2014 usbserial.ko

but I can't see ftdio_sio.ko....what can I find this module?

It's possible to download a linux SD image for Galileo with this module built in?

Thank you very much!

Bye