Add mako's audio package

This is labeled as being for mako, so use it

Change-Id: Ic4f0b295ce27d084dfb4b44f3a58dbbe5b1416a1
Remove test/debug props taken out of 4.2.2

Change-Id: Iff91682ce309144960ad45370ad401d609cbcc67
add widevine to proprietary-blobs

These are needed to playback drm encoded
content (such as Hulu Plus).

Change-Id: I2712ed512f3f8562d6f43cce48309c22563b7e69