ASoC: mchp-spdifrx: convert to devm_platform_get_and_ioremap_resource

Use the helper function that wraps the calls to platform_get_resource()
and devm_ioremap_resource() together.

Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com>
Link: https://lore.kernel.org/r/20201004094505.1041898-1-codrin.ciubotariu@microchip.com


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