phy: lantiq: convert to devm_platform_ioremap_resource

Use devm_platform_ioremap_resource to simplify code

Signed-off-by: Chunfeng Yun <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Vinod Koul <[e-mail]>

drivers/phy/lantiq/phy-lantiq-vrx200-pcie.c

···
 	struct ltq_vrx200_pcie_phy_priv *priv;
 	struct device *dev = &pdev->dev;
 	struct phy_provider *provider;
-	struct resource *res;
 	void __iomem *base;
 	int ret;
 
···
 	if (!priv)
 		return -ENOMEM;
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	base = devm_ioremap_resource(dev, res);
+	base = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(base))
 		return PTR_ERR(base);