ASoC: msm: qdsp6v2: DAP: Add check to validate param length

To avoid buffer overflow, validate input length used to
set Dolby params.

Change-Id: I3f9d6040f118f63b60c20c83b0d8cae638f4a530
CRs-Fixed: 1095947
Signed-off-by: Sharad Sangle <assangle@codeaurora.org>