ASoC: open ASM session with 24 bit for 24 bit playback

For 24 bit playback decoder is opened with 16 bits per sample, So
decoder output is 16 bit only.
Set bits per sample to 24 if codec format is SNDRV_PCM_FORMAT_S24_3LE.
Set bits per sample to 16 as default value in capture prepare use case.

CRs-Fixed: 1035154
Change-Id: I14271b17441308f8ec6dfaea566c01887d1233f4
Signed-off-by: Preetam Singh Ranawat <apranawat@codeaurora.org>