Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.

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

Add an explanation of the inivals

Push the non-AR5416 related stuff into chipset specific directories.

sys/dev/ath/ath_hal/ar5416/ is getting very crowded and further
commits will make it even more crowded. Now is a good time to
shuffle these files out before any more extensive work is done
on them.

Create an ar9003 directory whilst I'm here; ar9003 specific
chipset code will eventually live there.

A local addition, not imported from ath9k.

AR_PHY_CALMODE is explicitly reset on interface reset for other chipsets;
this commit also sets it for the AR9160.

* Merge in AR9160 initval updates from Linux-2.6.34.
* Grab the AR_PHY_CCA and AR_PHY_EXT_CCA initvals from Linux wireless-testing.

Obtained from: Linux-2.6.34

Remove svn:executable prop.

Add PCIE power control api:
o add ah_configPCIE and ah_disablePCIE for drivers to configure PCIE
power save operation (modeled after ath9k, may need changes)
o add private state flag to indicate if device is PCIE (replaces private
hack in 5212 code)
o add serdes programming ini bits for 5416 and later parts and setup
for each part (5416 and 9160 logic hand-crafted from existing routines);
5212 remains open-coded but is now hooked in via ah_configPCIE
o add PCIE workaround gunk
o add ar5416AttachPCIE for iodomatic code used by 5416 and later parts

add FreeBSD property

import ath hal

virgin import of ath hal