NuPlayer: Fix for pcm offload not using offload path after pause time out

 -Decoded PCM offload playback fall back to deep buffer path after
  pause time out.
 -Don't try to open audio sink for offload decoded PCM on resuming
  after pause timeout, decoder will take care of opening it.

Change-Id: I6c8930e8d48900797e7eb90d128d3f875b5f939f