ASoC: fsl_spdif: keep all TxClk sources by txclk array

Use txclk array to keep all TxClk sources instead of keeping
clocks per rate - need to do this in order to avoid multiple
prepare_enable/disable_unprepare of the same clock during
suspend/resume.

Signed-off-by: Viorel Suman <viorel.suman@nxp.com>
Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
Link: https://lore.kernel.org/r/1646817523-26800-1-git-send-email-shengjiu.wang@nxp.com


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