[git pull] drm fixes

[Anca Emanuel]

Nouveau OpenGL regresion

Tools used: http://packages.ubuntu.com/maverick/misc/glmark2

With 2.6.38-rc5 latest git:
nv50_screen_get_param:162 -  Unknown PIPE_CAP 11
===================================================
    glmark2 10.07.1
===================================================
    OpenGL Information
    GL_VENDOR:     nouveau
    GL_RENDERER:   Gallium 0.4 on NV92
    GL_VERSION:    2.1 Mesa 7.9-devel
===================================================
Precompilation
    Vertex array                  FPS: 105
    Vertex buffer object          FPS: 267
Texture filtering
    Nearest                       FPS: 295
    Linear                        FPS: 299
    Mipmapped                     FPS: 308
Shading
    GLSL per vertex lighting      FPS: 227
    GLSL per pixel lighting       FPS: 260
===================================================
Your glmark2 Score is 727  ^_^
===================================================


With Linux ubuntu 2.6.35-25-generic #44-Ubuntu SMP Fri Jan 21 17:40:44
UTC 2011 x86_64 GNU/Linux:

nv50_screen_get_param:162 -  Unknown PIPE_CAP 11
===================================================
    glmark2 10.07.1
===================================================
    OpenGL Information
    GL_VENDOR:     nouveau
    GL_RENDERER:   Gallium 0.4 on NV92
    GL_VERSION:    2.1 Mesa 7.9-devel
===================================================
Precompilation
    Vertex array                  FPS: 265
    Vertex buffer object          FPS: 599
Texture filtering
    Nearest                       FPS: 687
    Linear                        FPS: 683
    Mipmapped                     FPS: 717
Shading
    GLSL per vertex lighting      FPS: 480
    GLSL per pixel lighting       FPS: 524
===================================================
Your glmark2 Score is 1628  ^_^
===================================================