ASoC: msm: qdsp6v2: allow zero size calibration for LSM

It is possible that LSM (Listen Stream Manager) could have an usecase
that does not need any audio calibration. In such cases, currently
the driver returns an error and does not allow the usecase setup with
LSM causing the usecase to fail. Fix this by allowing zero size audio
calibration for LSM.

CRs-fixed: 2031503
Change-Id: I42d89792a4fd6a0d6e1908a36720680b63ff0c30
Signed-off-by: Bhalchandra Gajare <gajare@codeaurora.org>