Status of bgx (ThunderX Eth driver) for FreeBSD 14?

The Ethernet driver for Marvell/Cavium ThunderX has a number of
issues, including at least:

- No man page (PR204414)
- Driver does not build as a module (PR204415)
- Locking issues (PR206310)
- Multicast not implemented (PR223573)
- Non-promiscuous not implemented (PR223575)

I'd like to know how much interest there is in this driver/hardware,
and if anyone is willing to work on improving it. If no one has any
interest I will at least add a minimal man page and document the state
of the driver there.