Add some comments to explain available debugging levels. Requested-by: Seth.
Add some comments to explain available debugging levels. Requested-by: Seth.

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