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

Rather than adding the rtw88 package add the flavored port for all the
supported wireless drivers we recently added support for.

Sponsored by: The FreeBSD Foundation
MFC after: 3 days
Pointed out by: cperciva (as part of the set of changes)
Reviewed by: cperciva (releng)
Differential Revision: https://reviews.freebsd.org/D47406