UBUNTU: [Config] Add DRM ast driver to udeb installer image

[Kamal Mostafa]

On Wed, 2016-01-20 at 19:22 -0700, Tim Gardner wrote:
> https://lists.ubuntu.com/archives/kernel-team/2016-January/068992.html
> 
> This thread implies that the associated patch has been applied to all
> affected releases. However, while checking the release states I noticed
> that it had not been applied to Wily master-next. I've taken the liberty
> of doing so.
> 
> rtg

Sorry for that Tim.  Forensics on my local wily repo shows this was my
fault.  I accidentally lost that commit after build-testing it.  (No
other commits appear to have been lost in the process).

 -Kamal