ASoC: rt5650: Eliminate the high frequency glitch

The glitch was detected in the high frequency of the HP playback.
This patch adjusts the DAC dither setting to avoid this situation
for almost all cases.

Signed-off-by: Derek Fang <derek.fang@realtek.com>
Link: https://patch.msgid.link/20250721034728.1396238-1-derek.fang@realtek.com


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