ASoC: msm: qdsp6v2: Check for null data pointer

Add check for null data pointer in
aprv2_core_fn_q() and log error message if
true.

CRs-Fixed: 575228
Change-Id: I0d02913ced422ff3f396375c70ad6929908ee58d
Signed-off-by: Kenneth Westfield <kwestfie@codeaurora.org>