mailbox: mailbox-test: 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: Yangtao Li <frank.li@vivo.com>
Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>

drivers/mailbox/mailbox-test.c

@@ -367,8 +367,7 @@ static int mbox_test_probe(struct platform_device *pdev)
 		return -ENOMEM;
 
 	/* It's okay for MMIO to be NULL */
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	tdev->tx_mmio = devm_ioremap_resource(&pdev->dev, res);
+	tdev->tx_mmio = devm_platform_get_and_ioremap_resource(pdev, 0, &res);
 	if (PTR_ERR(tdev->tx_mmio) == -EBUSY) {
 		/* if reserved area in SRAM, try just ioremap */
 		size = resource_size(res);
@@ -378,8 +377,7 @@ static int mbox_test_probe(struct platform_device *pdev)
 	}
 
 	/* If specified, second reg entry is Rx MMIO */
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
-	tdev->rx_mmio = devm_ioremap_resource(&pdev->dev, res);
+	tdev->rx_mmio = devm_platform_get_and_ioremap_resource(pdev, 1, &res);
 	if (PTR_ERR(tdev->rx_mmio) == -EBUSY) {
 		size = resource_size(res);
 		tdev->rx_mmio = devm_ioremap(&pdev->dev, res->start, size);