iwlwifi: clarifying man page update
Based on some feedback clarify the man page for
- how to load the driver currently
- status of the driver with respect to iwm(4)
and leave a comment to (automatically) add a full list of chipsets
to the man page.
Sponsored by: The FreeBSD Foundation
Reviewed by: debdrup
Differential Revision: https://reviews.freebsd.org/D33713
(cherry picked from commit e9016c0be83f9b1d9cf7c2460ee3b041967bb75f)