sys: Remove $FreeBSD$: one-line .c comment pattern

Remove /^/[*/]\s*\$FreeBSD\$.*\n/

iwm(4): Remove _mvm from the namespace.

This was inherited from iwlwifi, which drives devices supported by both
iwn(4) and iwm(4) in FreeBSD. In iwm(4) _mvm is meaningless, so remove
it. OpenBSD made the same change a long time ago. No functional change
intended.

MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation

iwm - Clear Time Event active state, when receiving End Notification.

* This hopefully avoids some firmware panics, I was occasionally seeing,
when iwm disconnects upon losing signal to an access point at some point.

* This is synchronizing the if_iwm_time_event.c file a bit more from the
corresponding Linux iwlwifi/mvm/time-event.c.

Taken-From: Linux iwlwifi

Submitted by: Augustin Cavalier <waddlesplash@gmail.com> (Haiku)
Obtained from: DragonFlyBSD (e8cb71584a6a72232c13151d60e57f7f229220eb)

iwm - Improve firmware Time Event handling.

* This is a mix of the OpenBSD Git 7fd9664469d1b717a307eebd74aeececbd3c41cc
change, and syncing with the Linux iwlwifi code.

Taken-From: Linux iwlwifi, and OpenBSD

Submitted by: Augustin Cavalier <waddlesplash@gmail.com> (Haiku)
Obtained from: DragonFlyBSD (706a3044afd27c3fecfdf57bec1695310e53e228)

[if_iwm] Partly sync if_iwm_binding.c to Linux iwlwifi code.

* Store macid and color values in struct iwm_vap, to avoid hardcoded
constants a bit.

* Add iwm_mvm_binding_remove_vif() function (will be used in disconnecting
from an access point without resetting the whole device).

* Not adding code from Linux iwlwifi yet, to handle one PHY context to
be bound to several VAPs/virtual-interfaces, it's definitely not needed
in the near future.

Obtained from: dragonflybsd.git f16ef74977e51e1bfc7a625dd18b98b02158e0e5

[iwn] fix firmware command use in iwm_auth().

The iwm firmware has separate commands for add, modify and delete for
various things (mac, phy context, etc.) The openbsd driver has a habit
of just completely resetting the NIC each time, which is technically
mostly okay (as long as the reset doesn't actually fail!) but it means
a lot of the code is doing ADD when it should do MODIFY.

The firmware responds in kind - it just asserts.

This fixes auth attempts that occur after the NIC has been already
configured.

(I'm sure there are more instances of this!)

Tested:

iwm0: <Intel Dual Band Wireless AC 7260> mem 0xf1400000-0xf1401fff irq 17 at device 0.0 on pci2
iwm0: revision: 0x140, firmware 25.228 (API ver. 9)

.. STA mode.

Submitted by: Masachika ISHIZUKA <ish@amail.plala.or.jp>

Import OpenBSD's iwm WiFi driver for Intel 3160/7260/7265.

There are still several bugs, but I've been using it for a while now.
Thanks to all the testers and to Adrian for his help with this
driver.

This driver isn't connected to the build yet, but it will be soon.

There's no MFC planned because the driver isn't very stable yet.

Reviewed by: adrian
Obtained from: https://github.com/rpaulo/iwm
Tested by: adrian, gjb, dumbbell (others that I forgot).
Relnotes: yes