clk: sunxi: sun6i-apb0: Make use of the helper function devm_platform_ioremap_resource()

Use the devm_platform_ioremap_resource() helper instead of
calling platform_get_resource() and devm_ioremap_resource()
separately

Signed-off-by: Cai Huoqing <[e-mail]>
Signed-off-by: Maxime Ripard <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]

drivers/clk/sunxi/clk-sun6i-apb0.c

···
 	struct device_node *np = pdev->dev.of_node;
 	const char *clk_name = np->name;
 	const char *clk_parent;
-	struct resource *r;
 	void __iomem *reg;
 	struct clk *clk;
 
-	r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	reg = devm_ioremap_resource(&pdev->dev, r);
+	reg = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(reg))
 		return PTR_ERR(reg);