chore: replace {0, 0} with {DEV,KOBJ}METHOD_END where appropriate

[ngie]

Summary

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

Test Plan

• This change boots on my MacBook13,2 (which uses a limited of drivers touched here).

TODO: a full tinderbox build is in progress.

[jhb]

These all look good to me.

[ehem_freebsd_m5p.com]

I had commits for nearly all of these handy, but I'm lacking a commit bit. Worse I'm starving for committer bandwidth so I end up prioritizing higher-importance commits over cleanup. I've got lots more of this handy in association with D48449, just need someone I can hand it off too.