MFC r220721,220723-220726:

MFC r220721,220723-220726:
- Rename some stuff in favour of the OpenBSD names:
  - prefer EDCA over WME
  - qid for a TXQ ID
  - reg for register values
- Shuffle code around a bit. Mostly to group functional connected things,
  others to get the same order as the OpenBSD code.
- Sync debug and error messages with OpenBSD. The device capability
  announcements are now hidden behind bootverbose.
- Sync comments with OpenBSD.
- Whitespace sync, some more style(9) conform then others.

git-svn-id: svn://svn.freebsd.org/base/stable/8@223248 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f