Move to a stable kernel branch to fully fix freedreno.
Created by: montvid
Tested with weston and hildon. Works without lockups, better performance in mesa demos. Drm enabled by default as it works flawlessly. Moved from flo-wip to flo-4.11. Glxgears in weston show: 1366 frames in 5.0 seconds = 273.078 FPS