ports/stm32: Disable lwip dispatch first before deinit.
ports/stm32: Disable lwip dispatch first before deinit.

kwagyeman/openmv,kwagyeman/openmv,openmv/openmv,kwagyeman/openmv,openmv/openmv,openmv/openmv,kwagyeman/openmv,openmv/openmv