drm/i915: Make encoder->compute_config take the connector state

Some places iterate over connector_state to find the right
connector, pass it along as argument.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1470755054-32699-7-git-send-email-maarten.lankhorst@linux.intel.com
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/i915/intel_dp_mst.c b/drivers/gpu/drm/i915/intel_dp_mst.c
index 8f7594e..5b5878e 100644
--- a/drivers/gpu/drm/i915/intel_dp_mst.c
+++ b/drivers/gpu/drm/i915/intel_dp_mst.c
@@ -31,7 +31,8 @@
 #include <drm/drm_edid.h>
 
 static bool intel_dp_mst_compute_config(struct intel_encoder *encoder,
-					struct intel_crtc_state *pipe_config)
+					struct intel_crtc_state *pipe_config,
+					struct drm_connector_state *conn_state)
 {
 	struct intel_dp_mst_encoder *intel_mst = enc_to_mst(&encoder->base);
 	struct intel_digital_port *intel_dig_port = intel_mst->primary;
@@ -54,7 +55,6 @@
 	 */
 	lane_count = drm_dp_max_lane_count(intel_dp->dpcd);
 
-
 	pipe_config->lane_count = lane_count;
 
 	pipe_config->pipe_bpp = 24;