Add a file flag to trigger the forced serial or else we may miss it during a firmware update and still end up with an accidentally disabled port.
Add a file flag to trigger the forced serial or else we may miss it during a firmware update and still end up with an accidentally disabled port.

brunostein/pfsense,NewEraCracker/pfsense,ch1c4um/pfsense,NOYB/pfsense,ptorsten/pfsense,dennypage/pfsense,phil-davis/pfsense,phil-davis/pfsense,NOYB/pfsense,ch1c4um/pfsense,ptorsten/pfsense,jxmx/pfsense,pfsense/pfsense,ptorsten/pfsense,BlackstarGroup/pfsense,ch1c4um/pfsense,BlackstarGroup/pfsense,dennypage/pfsense,pfsense/pfsense,pfsense/pfsense,BlackstarGroup/pfsense,NewEraCracker/pfsense,phil-davis/pfsense,dennypage/pfsense,brunostein/pfsense,dennypage/pfsense,jxmx/pfsense,NOYB/pfsense,phil-davis/pfsense,NewEraCracker/pfsense,BlackstarGroup/pfsense,brunostein/pfsense,pfsense/pfsense,NewEraCracker/pfsense,jxmx/pfsense,ch1c4um/pfsense