wifi: Allow configuration of country code for wifi (2/2)

Wifi country code handling is a nightmare - Most retail devices
have region customization in /system for each country a device
is shipped to.

This doesn't work very well for a firmware like Cyanogenmod,
where we try to support all target countries with one firmware
package.  For whatever reason, with newer Broadcom drivers/
firmware blobs, the old trick of using a universal region code
(ccode=ALL in nvram_net.txt) does not seem to work.  Who knows
what the deal is for other wifi chipsets.

The good thing is that wpa_supplicant has a standardized
cross-chipset method for setting the region code, and we
use that here.

Ported from cm-10.2
Framework part: http://review.cyanogenmod.org/54997

Change-Id: Ia9f5133f61f56d89ccb290e37a393f5de507e1cf

Conflicts:
	res/values/arrays_custom.xml
Merge "wifi: Allow configuration of country code for wifi (2/2)" into kitkat
Live Volume Steps [2/2]

Change-Id: Ie885cd895e95a1333eb5eee5d8d781eba9d6efa0

Move volume steps into separate menu

Conflicts:
	res/values/arrays_custom.xml
	res/values/strings_custom.xml

Change-Id: I88db2f82c4b7837de571cdd500402b7db3be54cb
Merge pull request #2 from AOKP/kitkat

Merge branch "aokp" into MIAOKP