props: add adb to default usb mode

Change-Id: Iad259c6b08112e5b0cfdc5fd3bb8243e50609415
media_codecs: updates for lollipop

* use google and ffmped codecs
* fix up to pass cts

Change-Id: Ia8f88f6f64edebae733adb26740c590679b24bde