g2: Make audio not suck anymore.

 * Add support for additional low-power offload modes
 * Enable gapless playback support
 * Enable 24-bit playback
 * Enable the compander for increased dynamic range on headphones
   and speaker output

Change-Id: If8cae7e940ba753d8b155017b15239bb49616b72
Signed-off-by: bart452 <bart4524@gmail.com>

Conflicts:
	g2.mk
Use cm_aosp audio

Change-Id: I2405417a406780e273e09ee74ec35d620bb36a3b
Hangouts video chat functional but needs tweaking

Change-Id: Ie158ff39d08e2a707cedfd0be6bfa6369b8c0887