Release Notes: Hardware Compat: Add more network devices

Replace the hand-crafted ipw(4), iwi(4), iwm(4), malo(4), rtwn(4),
and wpi(4) entries with logic to generate them from the manual pages.

Also update logic for ixgbe, which was renamed to ix(4) in d8b48a2,
and add logic to generate ice(4), which has been present for a while.

Reviewed by: bz
Differential Revision: https://reviews.freebsd.org/D47172