ASoC: rt1015: Add bclk detection and dc detection

Add bclk detection and dc detection before playback.

Signed-off-by: Jack Yu <jack.yu@realtek.com>
Link: https://lore.kernel.org/r/20210322055053.31797-1-jack.yu@realtek.com


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