PERFORCE change 123168 for review

[Rui Paulo]

Rui Paulo wrote:
> http://perforce.freebsd.org/chv.cgi?CH=123168
> 
> Change 123168 by rpaulo at rpaulo_epsilon on 2007/07/09 02:12:16
> 
> 	Add support for keyboard backlight control (found on MacBook
> 	Pros). 
> 	dev.asmc.N.light.{left,right} sysctl tree is now created.
> 	Setting a value on the "right" or "left" nodes sets the
> 	keyboard backlight level. Reading those sysctl nodes, gives
> 	the each sensor raw 

I did not test this as I don't own a MacBook Pro, but it should work.
If anyone has a MacBook Pro and is willing to test, it would be much
appreciated.

Regards.
-- 
Rui Paulo