request for contributions in device porting documentation

[Glenn Kasten]

The audio section of the device porting documentation at http://source.android.com/devices/

was updated recently, and the accompanying doc sources are now available at AOSP.

If you would like to contribute to the device porting docs for audio or any other area,

please fetch project docs/source.android.com from AOSP, then look at subdirectory src/devices/

Thanks in advance for your contributions!