standardize the device_mode variable
standardize the device_mode variable

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