ASoC: msm: Add Buffer overflow check

The overflow check is required to ensure that user space data
in kernel may not go beyond buffer boundary

CRs-Fixed: 1064411
Change-Id: I54c28a8942cf1a6a47a4e8272f3159b35d753ead
Signed-off-by: Karthik Reddy Katta <a_katta@codeaurora.org>