dmaengine: shdmac: Convert to devm_platform_ioremap_resource()

Use devm_platform_ioremap_resource() to simplify code.

Signed-off-by: Yangtao Li <frank.li@vivo.com>
Link: https://lore.kernel.org/r/20230705081856.13734-4-frank.li@vivo.com


Signed-off-by: Vinod Koul <vkoul@kernel.org>