drm/i915: Convert intel_dp_mst to use atomic state

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1470755054-32699-14-git-send-email-maarten.lankhorst@linux.intel.com
[mlankhorst: Address bikeshed.]
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
1 file changed