drm/amd/display: Minimize wait for pending updates

[Why/How]
Move the wait for pending updates past prepare_bandwidth if the previous
update was not a full update to reduce the average time it takes to
complete a full update.

Reviewed-by: Dillon Varone <dillon.varone@amd.com>
Reviewed-by: Alvin Lee <alvin.lee2@amd.com>
Signed-off-by: Ilya Bakoulin <Ilya.Bakoulin@amd.com>
Signed-off-by: Zaeem Mohamed <zaeem.mohamed@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
(cherry picked from commit 022f0d692c8bccf51b10f2ac4ea6341c646a0986)
Signed-off-by: Alex Hung <alex.hung@amd.com>

Author: Ilya Bakoulin

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

@@ -3822,7 +3822,7 @@ static void commit_planes_for_stream(struct dc *dc,
 	dc_exit_ips_for_hw_access(dc);
 
 	dc_z10_restore(dc);
-	if (update_type == UPDATE_TYPE_FULL)
+	if (update_type == UPDATE_TYPE_FULL && dc->optimized_required)
 		hwss_process_outstanding_hw_updates(dc, dc->current_state);
 
 	for (i = 0; i < dc->res_pool->pipe_count; i++) {
@@ -3849,6 +3849,9 @@ static void commit_planes_for_stream(struct dc *dc,
 		context_clock_trace(dc, context);
 	}
 
+	if (update_type == UPDATE_TYPE_FULL)
+		hwss_wait_for_outstanding_hw_updates(dc, dc->current_state);
+
 	top_pipe_to_program = resource_get_otg_master_for_stream(
 				&context->res_ctx,
 				stream);