linux-firmware-nonfree: Add prism54 softmac firmware

[Chase Douglas]

I have uploaded a new version of the linux-firmware-nonfree package to:

http://kernel.ubuntu.com/~cndougla/linux-firmware-nonfree/

The new package includes the firmware for prism54 softmac cards. The firmware 
was removed from linux-firmware due to it missing a proper license statement. I 
did not copy over the old prism54 (non-softmac) firmware because it has been 
superseded by the softmac firmware and is no longer useful in the Lucid kernel 
version.

Thanks,
Chase