drm/amd/display: Expose function reset_cur_dp_mst_topology

[Why & How]
Need to leverage this function out of dc_link.c. Change it to public.
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Reviewed-by: Hersen Wu <hersenxs.wu@amd.com>
Acked-by: Alan Liu <HaoPing.Liu@amd.com>
Signed-off-by: Wayne Lin <Wayne.Lin@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/core/dc_link.c

@@ -845,7 +845,7 @@ static bool discover_dp_mst_topology(struct dc_link *link, enum dc_detect_reason
 	return link->type == dc_connection_mst_branch;
 }
 
-static bool reset_cur_dp_mst_topology(struct dc_link *link)
+bool reset_cur_dp_mst_topology(struct dc_link *link)
 {
 	bool result = false;
 	DC_LOGGER_INIT(link->ctx->logger);

drivers/gpu/drm/amd/display/dc/dc_link.h

@@ -514,4 +514,7 @@ bool dc_dp_trace_is_logged(struct dc_link *link,
 struct dp_trace_lt_counts *dc_dp_trace_get_lt_counts(struct dc_link *link,
 		bool in_detection);
 unsigned int dc_dp_trace_get_link_loss_count(struct dc_link *link);
+
+/* Destruct the mst topology of the link and reset the allocated payload table */
+bool reset_cur_dp_mst_topology(struct dc_link *link);
 #endif /* DC_LINK_H_ */