audioflinger: Power hints for audio activity

 * Take 2, now with 100% less crashes!

Change-Id: I48fb0d2e3cfc64f46d99f177b4cf3fe842d06df4
Revert "camera: Add a few missing legacy camera params."

Either we keep legacy stuff, or remove ALL parts
of it, but not partly leaving dead code.

This reverts commit 12c66985ae4177feb73bbcc709ef80a18660ebec.

Change-Id: I0bbd47b0328114672f798864d04f2e9bdaa1f91e