ALSA: hda/cs35l56: Call cs_dsp_power_down() before calling cs_dsp_remove()

In cs35l56_hda_unbind() cs_dsp_power_down() must be called to cleanup
before calling cs_dsp_remove cs_dsp_remove().

Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20230731165726.7940-6-rf@opensource.cirrus.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>