DCI media definitions
Add a new subreason for Service_InternetStatus to cover media status change (eg. link up/link down). Note that this isn't in the Service_DCIDriverStatus call because in the newer FreeBSD stack it's the equivalent of the Internet module that maintains the state (communicated up from their equivalent of DCI) because the ifp is needed - which is owned by the network stack.
Add media ST_TYPEs for WiFi. This is the entire list of bands covered by the 802.11 spec (much the same as we list all the 802.3 ones).