usb: bdc: use devm_platform_ioremap_resource() to simplify code

Use devm_platform_ioremap_resource() to simplify the code a bit.
This is detected by coccinelle.
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Link: https://lore.kernel.org/r/20190904093335.22860-1-yuehaibing@huawei.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/gadget/udc/bdc/bdc_core.c

@@ -480,7 +480,6 @@ static void bdc_phy_exit(struct bdc *bdc)
 static int bdc_probe(struct platform_device *pdev)
 {
 	struct bdc *bdc;
-	struct resource *res;
 	int ret = -ENOMEM;
 	int irq;
 	u32 temp;
@@ -508,8 +507,7 @@ static int bdc_probe(struct platform_device *pdev)
 
 	bdc->clk = clk;
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	bdc->regs = devm_ioremap_resource(dev, res);
+	bdc->regs = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(bdc->regs)) {
 		dev_err(dev, "ioremap error\n");
 		return -ENOMEM;