This patch allow satge commit without pipes queued to allow a pipe to be un-staged from mixer immediately after overlay_unset. Change-Id: I03abb907c66cce3d0559743d3bb1eb26a88dc78a Signed-off-by: Kuogee Hsieh <khsieh@codeaurora.org> Signed-off-by: Siddhartha Agrawal <agrawals@codeaurora.org>