ASoC: cs42l42: Use device_property API instead of of_property

Use the device_property APIs so that the code will work on devicetree
and ACPI systems.

Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Signed-off-by: Lucas Tanure <tanureal@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20210426155303.853236-2-tanureal@opensource.cirrus.com


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