Update serial.c

fix reset serial receive interrupt flag when close serial

components/drivers/serial/serial.c

@@ -358,7 +358,7 @@ static rt_err_t rt_serial_close(struct rt_device *dev)
         serial->serial_rx = RT_NULL;
         dev->open_flag &= ~RT_DEVICE_FLAG_INT_RX;
         /* configure low level device */
-        serial->ops->control(serial, RT_DEVICE_CTRL_CLR_INT, (void*)RT_DEVICE_FLAG_INT_TX);
+        serial->ops->control(serial, RT_DEVICE_CTRL_CLR_INT, (void*)RT_DEVICE_FLAG_INT_RX);
     }
     else if (dev->open_flag & RT_DEVICE_FLAG_DMA_RX)
     {