LinuxKPI: 802.11: fill in a lot more RX status fields

Convert a lot more LinuxKPI rx_status fields to net80211 rx_stats
bits for as much as we can see fit. Factor the entire logic out
into its own function as it got quite long.

Now only net80211 needs to start using more of these values and
report them.

Also fix some related fields and struct definitions in LinuxKPI.

Sponsored by: The FreeBSD Foundation
MFC after: 3 days