ata: ahci_seattle: Convert to devm_platform_ioremap_resource()

Use devm_platform_ioremap_resource() to simplify code.

Signed-off-by: Yangtao Li <[e-mail]>
Signed-off-by: Damien Le Moal <[e-mail]>

drivers/ata/ahci_seattle.c

···
 	if (!plat_data)
 		return &ahci_port_info;
 
-	plat_data->sgpio_ctrl = devm_ioremap_resource(dev,
-			      platform_get_resource(pdev, IORESOURCE_MEM, 1));
+	plat_data->sgpio_ctrl = devm_platform_ioremap_resource(pdev, 1);
 	if (IS_ERR(plat_data->sgpio_ctrl))
 		return &ahci_port_info;