ASoC: Intel: Add S24_LE to supported Baytrail DAI capture formats

ADSP firmware appears to support also higher resolutions than S16_LE when
capturing. In fact hexdump shows with S24_LE that all 32-bits can be
changing and not only 24 most significant bits but be conservative and only
S24_LE now.

Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>