staging: kpc2000: kpc_spi: use devm_* API to manage mapped I/O space

The kpc_spi driver does not unmap its I/O space upon error cases in the
probe() function or upon remove(). Make the driver clean up after itself
more maintainably by migrating to using the managed resource API.
Signed-off-by: Geordan Neukum <gneukum1@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/kpc2000/kpc2000_spi.c

@@ -471,7 +471,8 @@ kp_spi_probe(struct platform_device *pldev)
 		goto free_master;
 	}
 
-	kpspi->phys = (unsigned long)ioremap_nocache(r->start, resource_size(r));
+	kpspi->phys = (unsigned long)devm_ioremap_nocache(&pldev->dev, r->start,
+							  resource_size(r));
 	kpspi->base = (u64 __iomem *)kpspi->phys;
 
 	status = spi_register_master(master);