clk: sunxi-ng: ccu-sun8i-de2: 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 <caihuoqing@baidu.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://lore.kernel.org/r/20210907085221.4713-1-caihuoqing@baidu.com

drivers/clk/sunxi-ng/ccu-sun8i-de2.c

@@ -280,7 +280,6 @@ static const struct sunxi_ccu_desc sun50i_h5_de2_clk_desc = {
 
 static int sunxi_de2_clk_probe(struct platform_device *pdev)
 {
-	struct resource *res;
 	struct clk *bus_clk, *mod_clk;
 	struct reset_control *rstc;
 	void __iomem *reg;
@@ -291,8 +290,7 @@ static int sunxi_de2_clk_probe(struct platform_device *pdev)
 	if (!ccu_desc)
 		return -EINVAL;
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	reg = devm_ioremap_resource(&pdev->dev, res);
+	reg = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(reg))
 		return PTR_ERR(reg);