Revert r330897:

This was intended to be a non-functional change. It wasn't. The commit
message was thus wrong. In addition it broke arm, and merged crypto
related code.

Revert with prejudice.

This revert skips files touched in r316370 since that commit was since
MFCed. This revert also skips files that require $FreeBSD$ property
changes.

Thank you to those who helped me get out of this mess including but not
limited to gonzo, kevans, rgrimes.

Requested by: gjb (re)

Partial merge of the SPDX changes

These changes are incomplete but are making it difficult
to determine what other changes can/should be merged.

No objections from: pfg

Copy head@r302406 to stable/11 as part of the 11.0-RELEASE cycle.
Prune svn:mergeinfo from the new branch, as nothing has been merged
here.

Additional commits post-branch will follow.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Some fixes to snd_envy24ht(4) driver:
- Allow DMA addresses anywhere in the lower 4GB; Envy24HT has a 32-bit DMA
engine, not 28-bit like Envy24.
- Mark interrupt handler as MPSAFE, seems to be correctly synchronized.

PR: kern/152378
Submitted by: Jason Harmening <jason.harmening@gmail.com>
MFC after: 1 month

Start copyright notices with /*-

Bring in a bunch of bug fixes and some code to support more chipsets.
Neither me nor Ariff have access to any of this hardware, so all tests
have been made by Konstantin and Artem. Commit message mostly written
by Konstantin.

envy24:
- Add test code to support rear line-in input on 'Terratec DMX 6fire'
audio card. This code is also intended to be used in the future for
support of cards, that have I2C-to-GPIO expanders wired between the
control line of the audio codec and the Envy24, however such cards
are too complex and i can't add that support without hardware sample
of such board, i've already tried and failed.

envy24ht:
- Add support for 'AudioTrak Prodigy HD2'.
- Add support for 'AudioTrak Prodigy 7.1 XT'.
- Add support for 'ESI Juli@' (Works ok, DAC volume is hard-coded for
the time being, so 'mixer vol ...' doesn't work, only 'mixer pcm
...' works). [1]
- Fix bug in the init data for M-Audio Revolution 5.1, that
results in distorted sound.
- Add software volume control (now 'mixer pcm' works, thanks to Ariff).
- Add support for more samples rates - 176.4kHz and 192kHz.
- Fix problem with the 192kHz samples rate playback when 24.576MHz
crystal is used on the board instead of 49.152MHz crystal.

spicds:
- Add support for Asahi Kasei flagship DAC - AK4396 (used in AudioTrak
Prodigy HD2).

Submitted by: Konstantin Dimitrov <kosio.dimitrov@gmail.com>
Tested by: Artem Antonov [1]
Reviewed by: ariff

Latest updates for Envy24/24HT. Fix various issues with LOR and panic
during verbose booting.

Submitted by: Konstantin Dimitrov <kosio.dimitrov@gmail.com>

Driver for Envy24HT (ICE1724 or VT1724)-based cards like
Terratec Aureon 7.1 Space: tested
Terratec Aureon 5.1 Sky: tested
Terratec PHASE 28: tested
Terratec Aureon 7.1 Universe: tested
Audiotrak Prodigy 7.1: tested
Audiotrak Prodigy 7.1 LT: not tested
Terratec PHASE 22: not tested
M-Audio Revolution 7.1: not tested
M-Audio Revolution 5.1: not tested
M-Audio Audiophile 192: tested

Submitted by: "Konstantin Dimitrov" <kosio.dimitrov@gmail.com>

Forcet commit to note repo copy:
envy24.c -> envy24ht.c
envy24.h -> envy24ht.h
ak452x.c -> spicds.c
ak452x.h -> spicds.h

Fast repo copy by: simon (30min turn-around)

dd the envy24 driver as is to the tree. It's not connected to the build
yet. More commits to follow.

I got no response from the author, but since the driver is BSD licensed
I don't think he will complain. :-)

I got it from http://people.freebsd.org/~lofi/envy24.tar.gz

Written by: Katsurajima Naoto <raven@katsurajima.seya.yokohama.jp>