Add comment in public header about flags not implemented
Add comment in public header about flags not implemented

lucasdemarchi/kmod,pmmccorm/kmod,Distrotech/kmod,pmmccorm/kmod,Distrotech/kmod,lpereira/kmod,Distrotech/kmod,pmmccorm/kmod,lpereira/kmod,lpereira/kmod,lucasdemarchi/kmod,lucasdemarchi/kmod