ASoC: cs42l42: Use snd_soc_tdm_params_to_bclk()

Use the new snd_soc_tdm_params_to_bclk() helper function to
calculate the bclk. This function handles most of the previous
manipulation and makes the code tidier.

Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20220817122347.1356773-6-rf@opensource.cirrus.com


Signed-off-by: Mark Brown <broonie@kernel.org>