ASoC: rt715: Add software reset in io init

Add software reset before setting preset registers to make sure
all the registers are the default value before preset.

Signed-off-by: Jack Yu <jack.yu@realtek.com>
Link: https://lore.kernel.org/r/4f405c7deb9642e1a8599c5f103b5759@realtek.com


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