ASoC: sunxi: sun4i-spdif: Use devm_platform_get_and_ioremap_resource()

Use devm_platform_get_and_ioremap_resource() to simplify
code.

Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20210617045012.1119650-4-yangyingliang@huawei.com


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