ASoC: tas2552: Add support for pll and pdm source clock selection

Instead of hard wiring the PLL_CLKIN and PDM_CLK to be sourced from BCLK add
proper clock configuration via the set_dai_sysclk callback.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Mark Brown <broonie@kernel.org>