release: add wifi-firmware-kmod@release to ship as package

Add the flavored port for all the
supported wireless drivers we recently added support for.

Sponsored by: The FreeBSD Foundation
Pointed out by: cperciva (as part of the set of changes)
Reviewed by: cperciva (releng)
Approved by: re (cperciva)
Differential Revision: https://reviews.freebsd.org/D47406

(cherry picked from commit 2483a2d36803896d27861c03e1f53dd9546b1e73)
(cherry picked from commit f21cb43c91ef5ff54173b15f550e711c9f87eec6)