dt/platform: Fix comment in of_dev_lookup()

The code is using of_dev_lookup() rather than of_devname_lookup().
Signed-off-by: Qi Zheng <arch0.zheng@gmail.com>
Signed-off-by: Rob Herring <robh@kernel.org>

drivers/of/platform.c

@@ -291,7 +291,7 @@ static struct amba_device *of_amba_device_create(struct device_node *node,
 #endif /* CONFIG_ARM_AMBA */
 
 /**
- * of_devname_lookup() - Given a device node, lookup the preferred Linux name
+ * of_dev_lookup() - Given a device node, lookup the preferred Linux name
  */
 static const struct of_dev_auxdata *of_dev_lookup(const struct of_dev_auxdata *lookup,
 				 struct device_node *np)