spi: ath79: simplify iomem resource mapping
spi: ath79: simplify iomem resource mapping

Simplify the code by switching from devm_ioremap to devm_ioremap_resource.
Checking the result of platform_get_resource is not needed as
devm_ioremap_resource checks the provided resource argument for NULL.

Signed-off-by: Heiner Kallweit <688f3b22cb68c85c90f972acb3bbdba2c5ca2ae1@gmail.com>
Signed-off-by: Mark Brown <b51b9a92386687a9ac927cebfa0f978adeb8cea5@kernel.org>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs