jtag_vpi: add some hysterisis for waiting for init_done

vsrc/jtag_vpi.v

@@ -87,10 +87,10 @@ begin
 	data_out	<= 32'h0;
 	data_in		<= 32'h0;
 
-	// Insert a #delay here because we need to
+        // Small delay to get past reset instability
-	// wait until the PC isn't pointing to flash anymore
+        //  before checking for init_done
-	// (this is around 20k ns if the flash_crash boot code
+        #200 
-	// is being booted from, else much bigger, around 10mil ns)
+          
 	wait(init_done)
 		if($test$plusargs("jtag_vpi_enable")) main;
 end