Revert "Properly handle changes in phone audio focus."

This reverts commit ee6de23f7c0e27c6b273bfbf43bfa97efd20ed84.
Revert "base: fix constant conflict"

This reverts commit 36365ed7af037dcd5a8758c4911b2a3dc6eeff6d.
Revert "Squashed commit of audio changes from CodeAurora"

This reverts commit 33c66f5d32cd8cc26268b5033840fee7b8b8e2bf.