Enabling a wifi LED

[Kyle McMartin]

On Wed, Jan 14, 2009 at 11:32:53AM -0500, Scott Robbins wrote:
> You'll get an error that there's no such sysctl option.  It seems to not
> be in the 2.6.27 vanilla kernel either. 
> 

Using sysctl from drivers is a no-no. But hey, I've come to expect
that level of quality from out of tree drivers, so you won't find
this sysctl on anything but madwifi.

There's likely another mechanism to enable it on ath5k, but I don't know
what it is.