Update notes for submitted changes

* audio: Add A2DP notification support
* libstagefright: Checks before freeing buffers on a port
* libstagefright: dynamic port reconfig handling
* libstagefright: Fallback to software encoder for high resolutions
* libstagefright: Add fix for mpeg4 data partition clips
* libstagefright - Fix timestamp overflow
* libstagefright: Fix AV sync issues
* libstagefright: HTTP Streaming fixes
* libstagefright: Add 2 APIs (suspend and resume) in Mediaplayer
* libstagefright: Fix to free buffers in error scenarios