Improve boot speed

 * Start with noop, finish with ROW.

Change-Id: Id27997e61978dbe9111a3526d6ccb08dd4cc9587
start kernel debug earlier

Change-Id: I1a8e9735f5a8b4c9f038d05a40b15cf86bc47091
clean layout

Change-Id: If58d50b2e95745dbbd272539014f5df693a1b515
Cleanup

- Overlay isn't required and causes wifi issues.
- i930x/n710x have their own system.prop

Change-Id: I9f9ed2ac2b6ed26264390bbc37d724f794a45af8
dedupe soft video codecs

Remove superfluous ffmpeg decoders for codecs that can be handled
by OMX.google

Change-Id: I70d85c1fc56c708336258994cda77f4a374f37fb