dfu: MANIFEST_SYNC: stay in MANIFEST_SYNC when manifestationIntolerant & completed
In theory a device which is manifestintolerant and completed the manifestation should
not reach MANIFEST_SYNC again.
Remove the state transistion to WAIT-RESET and stay in the current state and
wait for the main loop to change the state is safer.
Change-Id: I8c34a18e2336731126a8c01070d86e2547578e3d
