New wiki pages - wifi, ath/ath_hal

[Adrian Chadd]

Hi all,

I've begun fleshing out the Wifi and atheros pages in the FreeBSD wiki.

Wireless: http://wiki.freebsd.org/WiFi
Atheros: http://wiki.freebsd.org/dev/ath(4) ;
http://wiki.freebsd.org/dev/ath_hal(4)

Please let me know if you spot any issues or have any suggestions.

Thanks!


Adrian