spi: bcm63xx-hsspi: 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/20190904135918.25352-8-yuehaibing@huawei.comSigned-off-by: Mark Brown <broonie@kernel.org>

drivers/spi/spi-bcm63xx-hsspi.c

@@ -330,7 +330,6 @@ static int bcm63xx_hsspi_probe(struct platform_device *pdev)
 {
 	struct spi_master *master;
 	struct bcm63xx_hsspi *bs;
-	struct resource *res_mem;
 	void __iomem *regs;
 	struct device *dev = &pdev->dev;
 	struct clk *clk, *pll_clk = NULL;
@@ -341,8 +340,7 @@ static int bcm63xx_hsspi_probe(struct platform_device *pdev)
 	if (irq < 0)
 		return irq;
 
-	res_mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	regs = devm_ioremap_resource(dev, res_mem);
+	regs = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(regs))
 		return PTR_ERR(regs);