spi: npcm: 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/20190904135918.25352-20-yuehaibing@huawei.comSigned-off-by: Mark Brown <broonie@kernel.org>

drivers/spi/spi-npcm-pspi.c

@@ -341,7 +341,6 @@ static int npcm_pspi_probe(struct platform_device *pdev)
 {
 	struct npcm_pspi *priv;
 	struct spi_master *master;
-	struct resource *res;
 	unsigned long clk_hz;
 	struct device_node *np = pdev->dev.of_node;
 	int num_cs, i;
@@ -368,8 +367,7 @@ static int npcm_pspi_probe(struct platform_device *pdev)
 	priv->is_save_param = false;
 	priv->id = pdev->id;
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	priv->base = devm_ioremap_resource(&pdev->dev, res);
+	priv->base = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(priv->base)) {
 		ret = PTR_ERR(priv->base);
 		goto out_master_put;