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)
Differential Revision: https://reviews.freebsd.org/D47406

(cherry picked from commit 2483a2d36803896d27861c03e1f53dd9546b1e73)