Add flag for SWD programmer.
Add flag for SWD programmer.

It can now check if the self-test passed.

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