Copy stable/9 to releng/9.3 as part of the 9.3-RELEASE cycle.

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

MFC: r230897

Use new OSS-based BSD-licensed header for cs sound driver.

The cs driver requires a table with firmware values. An
alternative firmware is available in a similar Open Sound
System driver. This is actually a partial revert of
Revision 77504.

The csa driver is now free of the GPL.

Tested by: joel
Approved by: jhb (mentor)

Copy head to stable/9 as part of 9.0-RELEASE release cycle.

Approved by: re (implicit)

Implement suspend/resume operation for snd_csa(4)

PR: kern/82243
Submitted by: Serge Semenenko
Approved by: re (scottl)
MFC after: 1 month

update this driver to use new firmware and incorporate many fixes.

this works on cs4630 chips, and should implement the clkrun hack for
thinkpads- this will display diagnostic messages when triggered until its
correctness is established.

Make the origins clear.

Pointed out by: Tatoku Ogaito <tacha@trap.fukui-med.ac.jp>

- Introduce the bridge drivers for Sound Blaser, GUS and Crystal
Semiconductor CS461x/428x.
- Add support for GUS and CS461x/428x pcm.

Bridges reviewed by: dfr, cg
GUS non-PnP support submitted by: Ville-Pertti Keinonen <will@iki.fi>
GUS PnP support tested by: Michiru Saito <mich@mtci.ne.jp>