ASoC: wm_adsp: Fix missing locking in wm_adsp_[read|write]_ctl()

wm_adsp_read_ctl() and wm_adsp_write_ctl() must hold the cs_dsp pwr_lock
mutex when calling cs_dsp_coeff_read_ctrl() and cs_dsp_coeff_write_ctrl().

Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20230913160250.3700346-1-rf@opensource.cirrus.com


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