Sound Control: Sound control for WCD93xx codec

Fully GPL'ed version.

Signed-off-by: faux123 <reioux@gmail.com>
Sound Control: Added headphone poweramp controls

bump version to 2.1 to reflec this new addition

Signed-off-by: Paul Reioux <reioux@gmail.com>
defconfig: update

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>