TL-WN722N support on FreeBSD.

[sergio de Almeida Lenzi]

I bought a TL-WN725N  and a TL-WN723N
the model WN725N is better, and smaller 
both from tplink
and both works out of the box with FreeBSD 10 stable AMD64
I use them on a sony that have a wireless chip not recognizeable by
FreeBSD.
the only "catch" is to load the driver at boot (loader.conf) and accept
the licence...
if_urtwn_load=YES
legal.realtek.license_ack=1