ASoC: msm: qdsp6v2: Fix APR de-register issues during session close

APR de-register should get called for all open streams. The
change handles a case where de-register is not called.

CRs-fixed: 584533
Change-Id: Ied50b68cdf675583e1451954f7ddf40e9c4f53df
Signed-off-by: Phani Kumar Uppalapati <phaniu@codeaurora.org>
Signed-off-by: flar2 <asegaert@gmail.com>