ASoC: msm-cpe-lsm: Add 24 bit support for buffering path

Add 24 bit support for TX path bufferring on the CPE path. Adds support
for only SNDRV_PCM_FORMAT_S24_LE format, which is treated as 24 bit data
channel.

Change-Id: I31ac3db8758bdd54968ae5c8b030121dbdde75cb
Signed-off-by: Bhalchandra Gajare <gajare@codeaurora.org>