ASoC: topology: ABI - Define DAI physical PCM data formats

Define DAI physical PCM data formats for user space, so users can
configure the formats of backends by topology (e.g. the DAI format
to set on backend link init).

The kernel will also refer to these formats.

Signed-off-by: Mengdong Lin <mengdong.lin@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>