LinuxKPI: update 802.11 headers

Add new defines, struct members, and (stub) functions needed for an
updated iwlwifi. Most of the defines are for rfkill or HE.

Pull in a case statement from the upcoming iwlwifi update to
not break the build.

Sponsored by: The FreeBSD Foundation

(cherry picked from commit d875aa1587ce7d1651cabe395ed991f2384795cd)
(cherry picked from commit 9ad210c15933e5a49c51fba134e77d84cfdba94f)