ds2482 Code cleanup

Signed-off-by: Kiril Petrov <ice@geomi.org>
Add OWVerify, OWFamilySkipSetup and OWTargetSetup

Signed-off-by: Kiril Petrov <ice@geomi.org>
Merge branch 'ds2482' of https://github.com/retfie/contiki into ds2482