drm/amd/display: Trigger full update on plane change

With the optimized DCN10 frontend programming code, things are
programmed only when requested. For now, trigger a full update on all
plane changes.
Signed-off-by: Leo (Sunpeng) Li <sunpeng.li@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c

@@ -4703,6 +4703,11 @@ static int dm_update_planes_state(struct dc *dc,
 				return ret;
 			}
 
+			/* Tell DC to do a full surface update every time there
+			 * is a plane change. Inefficient, but works for now.
+			 */
+			dm_new_plane_state->dc_state->update_flags.bits.full_update = 1;
+
 			*lock_and_validation_needed = true;
 		}
 	}