ASoC: SOF: compress: Add support for computing timestamps

ASoC: SOF: compress: Add support for computing timestamps

We compute the number of pcm_io_frames by dividing the
dai position to size of a frame (channels * sample size).

Reviewed-by: Paul Olaru <paul.olaru@oss.nxp.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Laurentiu Mihalcea <laurentiu.mihalcea@nxp.com>
Signed-off-by: Daniel Baluta <daniel.baluta@nxp.com>
Link: https://lore.kernel.org/r/20220817080529.10864-5-daniel.baluta@oss.nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>