Merge r323509 and r324994 adding Cavium LiquidIO Driver (lio)

Description

Merge r323509 and r324994 adding Cavium LiquidIO Driver (lio)
to stable/11.

Submitted by: pkanneganti@cavium.com ((Prasad V Kanneganti)
Sponsored by: Cavium Networks
Differential Revision: https://reviews.freebsd.org/D12425