xf86-video-ati: Changes to 'displayport'

[Dave Airlie]

New branch 'displayport' available with the following commits:
commit 7d546a91c111b9a833e33873d82603689e71942c
Author: Alex Deucher <alexdeucher at gmail.com>
Date:   Thu Jul 2 11:57:54 2009 +1000

    displayport: more bits and pieces.
    
    fixes up the hardcoded i2c ids, adds the training calls

commit 1e075ea17b58577762bddf93840da4a654662a3f
Author: Dave Airlie <airlied at redhat.com>
Date:   Tue Jun 23 01:57:19 2009 -0400

    DP: add more random DP code snippets.
    
    lots of these from intel, in-kernel will share most of this code

commit 226227f969f7b36d33f7a20799067ef4687b2724
Author: Dave Airlie <airlied at redhat.com>
Date:   Tue Jun 23 01:32:25 2009 -0400

    DP: small bit more work.
    
    native AUXCH transactions work now, along with talking to DPEncoder
    
    so can retrive DPCP values and store them and figure out sink type.
    
    TODO:
    Actually set a mode and do link training.

commit b8270f8eec5a027e3f35b02adfe17fdc7bba518c
Author: airlied <airlied at numbat.localdomain>
Date:   Tue Jun 16 09:09:33 2009 -0400

    radeon: initial EDID over display port support.
    
    TODO:
    a) remove hardcoded 0x92 channel ID.
    b) everything else