ASoC: omap-abe-twl6040: Use provided MCLK frequency from pdata

Avoid using hardwired configuration for MCLK frequency.
Different board design might use other MCLK frequency.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>