Both of the aforementioned macros have been present in FreeBSD
for well over a decade: 2009 for `KOBJMETHOD_END`; 2011 for
`DEVMETHOD_END`.

Adapt all hardcoded references of `{0, 0}` with `DEVMETHOD_END`
and `KOBJMETHOD_END` as appropriate. This helps ensure that
future adaptations to drivers following patterns documented
in driver(9) can be made more easily/without issue.

MFC after:	1 week
Differential Revision:	 https://reviews.freebsd.org/D55414

No functional change intended.

Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
Differential Revision:	https://reviews.freebsd.org/D53528

The way a sound driver currently registers to sound(4) is using the
following sequence of function calls:

1. pcm_register() to initialize snddev_info.
2. pcm_addchan() calls to create the device's primary channels.
3. pcm_setstatus() to do the final setup.

While using 3 different functions in a specific order might not be very
elegant, this pattern cannot be easily avoided. However, pcm_register()
and pcm_setstatus() are especially confusing, since one would
intuitively expect:

1. pcm_register() to actually do the registration, as opposed to a basic
   initialization.
2. pcm_setstatus() to, as the name suggests, set some kind of status, as
   opposed to finalizing the registration.

This patch renames pcm_register() to pcm_init(), and pcm_setstatus() to
pcm_register(). Drivers are modified accordingly.

Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
Reviewed by:	dev_submerge.ch
Differential Revision:	https://reviews.freebsd.org/D47325

Both conditions are the same, so the second one is unreachable.

PR:		229550
Sponsored by:	The FreeBSD Foundation
MFC after:	2 days
Reviewed by:	andreast, markj
Differential Revision:	https://reviews.freebsd.org/D47167

Reviewed by:	emaste
MFC after:	1 week
Differential Revision:	https://reviews.freebsd.org/D45852

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

The SPDX folks have obsoleted the BSD-2-Clause-FreeBSD identifier. Catch
up to that fact and revert to their recommended match of BSD-2-Clause.

Discussed with:		pfg
MFC After:		3 days
Sponsored by:		Netflix