ASoC: rt5682s: Remove the volatile SW reset register from reg_default

This reg is for SW reset.
It shouldn't have default value, so remove.

Signed-off-by: Derek Fang <derek.fang@realtek.com>
Link: https://lore.kernel.org/r/20210930102928.28628-1-derek.fang@realtek.com


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