ASoC: mchp-pdmc: avoid casting to/from void pointer

Do not cast to and from void pointer. There is no need for this.

Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Link: https://lore.kernel.org/r/20230301113807.24036-7-claudiu.beznea@microchip.com


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