sys: Remove $FreeBSD$: one-line sh pattern

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

retire cp(4) driver

Sync serial (e.g. T1/T1/G.703) interfaces are obsolete, this driver
includes obfuscated source, and has reported potential security issues.

Differential Revision: https://reviews.freebsd.org/D33468

retire ce(4) driver

Sync serial (e.g. T1/T1/G.703) interfaces are obsolete, this driver
includes obfuscated source, and has reported potential security issues.

Differential Revision: https://reviews.freebsd.org/D33467

retire cx,ctau drivers

The devices supported by these drivers are obsolete ISA cards, and the
sync serial protocols they supported are essentially obsolete too.

Sponsored by: The FreeBSD Foundation

Remove adv(4) and adw(4)

Remove the advanssy drivers (both adv and adw). They were tagged as
gone in 12 a while qgo. The nycbug dmesg database shows this was last
seen in 6 and there were only a few adv sightings then (none for adw).

Relnotes: yes

Remove stray fatm reference.

rtwn(4), urtwn(4): merge common code, add support for 11ac devices.

All devices:
- add support for rate adaptation via ieee80211_amrr(9);
- use short preamble for transmitted frames when needed;
- multi-bss support:
* for RTL8821AU: 2 VAPs at the same time;
* other: 1 any VAP + 1 sta VAP.
RTL8188CE:
- fix IQ calibration bug (reason of significant speed degradation);
- add h/w crypto acceleration support.
USB:
- A-MPDU Tx support;
- short GI support;
Other:
- add support for RTL8812AU / RTL8821AU chipsets
(a/b/g/n only; no ac yet);
- split merged code into subparts:
* bus glue (usb/*, pci/*, rtl*/usb/*, rtl*/pci/*)
* common (if_rtwn*)
* chip-specific (rtl*/*)
- various other bugfixes.

Due to code reorganization, module names / requirements were changed too:
urtwn urtwnfw -> rtwn rtwn_usb rtwnfw
rtwn rtwnfw -> rtwn rtwn_pci rtwnfw

Tested with RTL8188CE, RTL8188CUS, RTL8188EU and RTL8821AU.

Tested by: kevlo, garga,
Peter Garshtja <peter.garshtja@ambient-md.com>,
Kevin McAleavey <kevin.mcaleavey@knosproject.com>,
Ilias-Dimitrios Vrachnis <id@vrachnis.com>,
<otacilio.neto@bsd.com.br>
Relnotes: yes

Add nodevice iwmfw to WITHOUT_SOURCELESS_UCODE.

The sn driver doesn't actually include microcode at the current time,
although it may in the future. Or not since the ositech cards that
might need it have become perhaps too rare to support.

Import OpenBSD's rsu(4) WLAN driver.
Support chipsets are the Realtek RTL8188SU, RTL8191SU, and RTL8192SU.

Many thanks to Idwer Vollering for porting/writing the man page and for
testing.

Reviewed by: adrian, hselasky
Obtained from: OpenBSD
Tested by: kevlo, Idwer Vollering <vidwer at gmail.com>

Adding urtwn(4) firmware and related changes.

Reviewed by: rpaulo
Approved by: sbruno (mentor)

Move WITHOUT_SOURCELESS_* files to sys/conf/ in order to avoid "universe"
target processing them as if they were standalone kernel config files.

Approved by: kib (mentor)
MFC after: 5 days