Add an implementation of the new get_master_volume method to bridge from the new
C only audio HAL to the old C++ legacy audio HAL.
Change-Id: I5c29814623b5141b0c69927ea60be9873c8a5dab
This doesn't actually create a HAL, but rather a set of helper static
libraries that device specific libraries (i.e. the old libaudio pieces)
can link against to create a proper audio HAL module.
We provide an audio_policy static wrapper and audio hardware interface
static wrapper.
Change-Id: Ie56195447ad24b83888f752dca24674b0afd8a76
Signed-off-by: Dima Zavin <dima@android.com>