fsi: aspeed: convert to devm_platform_ioremap_resource

Use devm_platform_ioremap_resource() to simplify code.
Signed-off-by: Yangtao Li <tiny.windzz@gmail.com>
Reviewed-by: Andrew Jeffery <andrew@aj.id.au>
Link: https://lore.kernel.org/r/20191228190631.26777-1-tiny.windzz@gmail.comSigned-off-by: Joel Stanley <joel@jms.id.au>

drivers/fsi/fsi-master-aspeed.c

@@ -533,7 +533,6 @@ static int tacoma_cabled_fsi_fixup(struct device *dev)
 static int fsi_master_aspeed_probe(struct platform_device *pdev)
 {
 	struct fsi_master_aspeed *aspeed;
-	struct resource *res;
 	int rc, links, reg;
 	__be32 raw;
 
@@ -549,8 +548,7 @@ static int fsi_master_aspeed_probe(struct platform_device *pdev)
 
 	aspeed->dev = &pdev->dev;
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	aspeed->base = devm_ioremap_resource(&pdev->dev, res);
+	aspeed->base = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(aspeed->base))
 		return PTR_ERR(aspeed->base);