mfd: atmel-flexcom: Use devm_platform_get_and_ioremap_resource()

Convert platform_get_resource(), devm_ioremap_resource() to a single
call to devm_platform_get_and_ioremap_resource(), as this is exactly
what this function does.

Signed-off-by: Ye Xingchen <[e-mail]>
Reviewed-by: Claudiu Beznea <[e-mail]>
Tested-by: Claudiu Beznea <[e-mail]>
Signed-off-by: Lee Jones <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]

drivers/mfd/atmel-flexcom.c

···
 static int atmel_flexcom_probe(struct platform_device *pdev)
 {
 	struct device_node *np = pdev->dev.of_node;
-	struct resource *res;
 	struct atmel_flexcom *ddata;
 	int err;
 
···
 	    ddata->opmode > ATMEL_FLEXCOM_MODE_TWI)
 		return -EINVAL;
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	ddata->base = devm_ioremap_resource(&pdev->dev, res);
+	ddata->base = devm_platform_get_and_ioremap_resource(pdev, 0, NULL);
 	if (IS_ERR(ddata->base))
 		return PTR_ERR(ddata->base);