ASoC: wcd_cpe_core: Add support to set confidence levels

Add LSM_SET_PARAMS interface to the CPE listen driver so as to provide
flexibility to the user space to be able to set the parameters for
listen session independently of the sound model registration.

Change-Id: If2e7d9a2b7d4020c178f8f05b899e244ee165d93
Signed-off-by: Bhalchandra Gajare <gajare@codeaurora.org>