* Enable staging drivers in Linux 3.x. Staging drivers are more experimental

  and lower quality than regular drivers.  However, there are a lot of drivers
  for wireless cards that we really need to have.  And it doesn't really hurt
  to have these drivers if you don't need them.
* Enable the Radeon KMS option.  This shouldn't be a problem since the X driver
  supports KMS (I think).

svn path=/nixpkgs/trunk/; revision=29994