usb/144201: AlphaSmart Dana usbdevs and uvisor update

[Stephen Hurd]

Hans Petter Selasky wrote:
> Committed to USB P4, ID=174973
>
> http://p4web.freebsd.org/chv.cgi?CH=174973
>
> http://perforce.freebsd.org/chv.cgi?CH=174973
>
> Please verify.
>   

Works for me.