ASoC: wm_adsp: Remove use of snd_ctl_elem_type_t

In preparation for moving the generic DSP support out of ASoC, remove
the use of the ALSA specific types for the control type. The use of an
ALSA type was unnecessary, the simplified code is easier to read and
avoids Sparse warnings.

Signed-off-by: Simon Trimmer <simont@opensource.cirrus.com>
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20210913160057.103842-2-simont@opensource.cirrus.com


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