LinuxKPI: 802.11: update compat code for updated drivers

Adjust and add structs, fields, functions to make more modern versions
of LinuxKPI based wireless drivers (based on wireless-testing (
wt-2023-06-09, wt-2023-07-24, and later)) compile.

Some of these changes can only be applied once all drivers get
updated to not break the old versions currently in the tree.
Mark those changes with __FOR_LATER_DRV_UPDATE for now and flip the
switch at a later point.

Sponsored by: The FreeBSD Foundation
MFC after: 20 days

sys: Remove $FreeBSD$: two-line .h pattern

Remove /^\s*\*\n \*\s+\$FreeBSD\$$\n/

LinuxKPI: 802.11: minor header updates

- add comments for enum values constantly looked up, and another one to
a net80211 equivalent (should possibly re-define those in the future?)
- add another nl80211_sta_info flag
- add enum environment_cap used in cfg80211.h in the future.

MFC after: 3 days

LinuxKPI: 802.11 update header files

Adjust struct members, add more (for HE dummy) defines, add more
(wrapper) functions in order to acoomodate another driver.

MFC after: 3 days

LinuxKPI: 802.11: add more header compat bits

First part adding more bits in order to synch up drivers to the same
level and enable a new ones.

MFC after: 3 days

LinuxKPI: 80211 (+net80211): update and cleanup headers

Fix types for various struct fields (initially added as int).

Move structs and inline functions logically together, e.g., for wowlan.
Add more skeleton functions and #defines needed for iwlwifi d3.c
in the future.

Add struct ieee80211_vht_cap (without "_ie") to net80211 and remove
duplicate definitions in LinuxKPI headers now using net80211 structs.
For now leave ieee80211_ie_vhtcap in net80211. I am not sure yet if we
actually need it as such. That'll be cleaned up with more VHT updates
in net80211 in the future.

No functional changes in currently compiled code intended.

Try to implement ieee80211_action_contains_tpc() as I ran into it with
an older iwlwifi chipset. This depends on c994352a8841eb453.

Sponsored by: The FreeBSD Foundation
MFC after: 2 weeks

LinuxKPI: 802.11 header updates

While working on new and updates to drivers more structs, fields,
functions, .. were found, had to be shuffled around, ..
Some of these are (so far still dummy) functions or not properly
typed fields. The IEEE80211_HE_ constants are all still dummy.
This was msotly as a start to make new (out-of-tree) things compile.

Sponsored by: The FreeBSD Foundation (minor VHT/chan width bits)
MFC after: 1 week

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.

Sponsored by: The FreeBSD Foundation
MFC after: 3 days

LinuxKPI: 802.11 header updates and add/adjust source dependencies.

This update is for more/newer versions of drivers:
- add and properly place more structs, enums, defines needed by drivers.
- correct types of struct fields.
- make various function arguments const.
- move REG_RULE() macro to its own file regulatory.h and
use macros for calculations.
- add linuxkpi_ieee80211_get_channel() implementation.
- change linuxkpi_ieee80211_ifattach() to return int for error checking.

No intended functional changes for iwlwifi.

Sponsored by: The FreeBSD Foundation (partially)
MFC after: 3 days

LinuxKPI: 802.11 update compat code for driver updates

Add more (dummy in case of HE) defines, structs, functions and another
mac80211 function pointer needed to update and support recent drivers.

MFC after: 3 days

LinuxKPI: add 802.11 compat code

Add 802.11 compat code for mac80211 and to a minimal degree cfg80211.
This allows us to compile and use basic functionality of wireless
drivers such as iwlwifi.

This is a constant work in progress but having it in the tree will
allow others to test and more easy to track changes and avoid having
snapshots no longer applying to branches.

Sponsored by: The FreeBSD Foundation
MFC after: 3 days