memory: fsl-corenet-cf: Use helper function devm_platform_ioremap_resource()

Use the devm_platform_ioremap_resource() helper instead of calling
platform_get_resource() and devm_ioremap_resource() separately.Make the
code simpler without functional changes.

Signed-off-by: Lv Ruyi <lv.ruyi@zte.com.cn>
Link: https://lore.kernel.org/r/20220418020147.2556925-1-lv.ruyi@zte.com.cn


Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>