mfd: stm32-lptimer: 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: Minghao Chi <[e-mail]>
Signed-off-by: ye xingchen <[e-mail]>
Signed-off-by: Lee Jones <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]

drivers/mfd/stm32-lptimer.c

···
 {
 	struct device *dev = &pdev->dev;
 	struct stm32_lptimer *ddata;
-	struct resource *res;
 	void __iomem *mmio;
 	int ret;
 
···
 	if (!ddata)
 		return -ENOMEM;
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	mmio = devm_ioremap_resource(dev, res);
+	mmio = devm_platform_get_and_ioremap_resource(pdev, 0, NULL);
 	if (IS_ERR(mmio))
 		return PTR_ERR(mmio);