drm/amd/display: Enable timing sync on DCN32

Missed enabling timing sync on DCN32 because DCN32 has a different DML
param.

Tested-by: Mark Broadworth <mark.broadworth@amd.com>
Reviewed-by: Martin Leung <Martin.Leung@amd.com>
Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alvin Lee <Alvin.Lee2@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/dml/dcn20/dcn20_fpu.c

@@ -1228,6 +1228,7 @@ int dcn20_populate_dml_pipes_from_context(
 		pipes[pipe_cnt].pipe.src.dcc = false;
 		pipes[pipe_cnt].pipe.src.dcc_rate = 1;
 		pipes[pipe_cnt].pipe.dest.synchronized_vblank_all_planes = synchronized_vblank;
+		pipes[pipe_cnt].pipe.dest.synchronize_timings = synchronized_vblank;
 		pipes[pipe_cnt].pipe.dest.hblank_start = timing->h_total - timing->h_front_porch;
 		pipes[pipe_cnt].pipe.dest.hblank_end = pipes[pipe_cnt].pipe.dest.hblank_start
 				- timing->h_addressable