drm/i915/mst: update max stream count to match number of pipes

We create the stream encoders and attach connectors for each pipe we
have. As the number of pipes has increased, we've failed to update the
topology manager maximum number of payloads to match that. Bump up the
max stream count to match number of pipes, enabling the fourth stream on
platforms that support four pipes.

Cc: [email protected]
Cc: Imre Deak <[email protected]>
Cc: Ville Syrjala <[email protected]>
Reviewed-by: Ville Syrjälä <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
Signed-off-by: Jani Nikula <[email protected]>
(cherry picked from commit 15bccbf)
Signed-off-by: Rodrigo Vivi <[email protected]>

Author: jnikula

drivers/gpu/drm/i915/display/intel_dp_mst.c

@@ -1867,7 +1867,8 @@ intel_dp_mst_encoder_init(struct intel_digital_port *dig_port, int conn_base_id)
 	/* create encoders */
 	mst_stream_encoders_create(dig_port);
 	ret = drm_dp_mst_topology_mgr_init(&intel_dp->mst_mgr, display->drm,
-					   &intel_dp->aux, 16, 3, conn_base_id);
+					   &intel_dp->aux, 16,
+					   INTEL_NUM_PIPES(display), conn_base_id);
 	if (ret) {
 		intel_dp->mst_mgr.cbs = NULL;
 		return ret;