Replace with a new from-scratch port of recent OpenBSD hifn7751 source,
with changes to the crypto-framework calls to fit Sam Leffler's rework.
(Some of the attach-time changes from the previous driver were carried over).
Many thanks to Quentin Garnier (cube@cubidou.net) for testing an pre-release
of the driver and finding a couple of missing initializations.
Note that RNG support is temporarily disabled, until a potential issue
with RNG quality is investigated and resolved.
does nothing useful at this moment - initailize the chip, that's all.
TODO: crypto logic framework in kernel (see openbsd sys/crypto)
TODO: ipsec frontend (need major rework in ipsec tree - should start with busywait)
TODO: character device frontend
