drivers: soc: qcom: Add overflow check for sound model size

Overflow check is added for sound model size to prevent
heap overflow while allocating memory for sound model data.

CRs-Fixed: 1100682
Change-Id: Id38523a5e79028c692670e84d5fe924a855a5a10
Signed-off-by: Karthik Reddy Katta <a_katta@codeaurora.org>