Do use start bsn for sync verification.

libraries/base/dp/tb/vhdl/tb_dp_bsn_sync_scheduler.vhd

@@ -521,7 +521,8 @@ BEGIN
   verify_sync <= NOT recover_from_in_lost;
 
   -- Verify that sync is on PPS and BSN grid as defined in [1].
-  proc_dp_verify_sync(ctrl_interval_size,
+  proc_dp_verify_sync(TO_UINT(ctrl_start_bsn),
+                      ctrl_interval_size,
                       g_block_size,
                       clk,
                       verify_sync,