MFC r306323:
[ath_hal] Add FCC6_FCCA regulatory domain (0x0014).

PR: 194336
Requested by: Chris Hutchinson <portmaster@bsdforge.com>

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

PicoStation M2HP presents reg domain 0x2a which is not found in atheros or linux
reference code. Add this workaround for now.

Reviewed by: adrian

Add new regulatory domain.

Obtained from: Qualcomm Atheros

These two are ath_hal regulatory domain updates from the Atheros
reference driver.

* Australia should use FCC3_WORLD
* Add some new SKUs; these are just the EEPROM values and haven't been
fully defined yet. As such they won't affect anything.

Obtained from: Atheros
Approved by: re (kib)

Migrate the regulatory database definitions into separate header files
to both make things clearer, and to make it easier to write userland
code which pulls in these definitions without needing to pull in the
rest of the HAL.

This stuff should be deprecated at some point in the future once
the net80211 regulatory domain support encapsulates all of the
defintions here.