dri2: Add vdpau driver name entry

[Christian König]

On 18.10.2011 14:30, Maarten Lankhorst wrote:
> libvdpau has a driver loading mechanism that looks for a dri2 driver
> first before falling back to nvidia, so lets use that.
>
> Allows use of libvdpau_rx00 without having to set things up separately,
> similar to the patch to xf86-video-nouveau.
>
> Signed-off-by: Maarten Lankhorst<m.b.lankhorst at gmail.com>

Looks good on first sign,

Reviewed-by: Christian König <deathsimple at vodafone.de>

Christian.