ASoC: da7210: Add support for High pass and Voice filters for ADC and DAC

ASoC: da7210: Add support for High pass and Voice filters for ADC and DAC

This patch add controls for setting cut-off for high pass and voice
filters of ADC and DAC. There are also switches to enable/disable
these filters.

Also removed hard coded, fixed  values of these parameters used by
previous version of driver.

Signed-off-by: Ashish Chavan <ashish.chavan@kpitcummins.com>
Signed-off-by: David Dajun Chen <dchen@diasemi.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>