ASoC: fsl_micfil: drop fsl_micfil_set_mclk_rate()

ASoC: fsl_micfil: drop fsl_micfil_set_mclk_rate()

All that the .set_sysclk hook in the micfil driver does is to pass
the sysclk frequency to fsl_micfil_set_mclk_rate(). This function
expects the sample rate as argument though, not any kind of sysclk
frequency. The resulting rate setting of the clock is overwritten
in hw_params anyway, so drop this altogether.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Shengjiu Wang <shengjiu.wang@gmail.com>
Link: https://lore.kernel.org/r/20220414162249.3934543-4-s.hauer@pengutronix.de
Signed-off-by: Mark Brown <broonie@kernel.org>