usb: chipidea: Set the DT node on the child device

The ChipIdea glue drivers just copy the glue resources to the "ci_hdrc"
child device. Instead, set the child device's DT node pointer to the
parent device's node so that platform_get_irq() can find the IRQ
resources in the DT. This removes the need for statically populating the
IRQ resources from the DT which has been deprecated for some time.
Acked-by: Peter Chen <peter.chen@kernel.org>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20211215225646.1997946-1-robh@kernel.orgSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/chipidea/core.c

@@ -864,6 +864,7 @@ struct platform_device *ci_hdrc_add_device(struct device *dev,
 	}
 
 	pdev->dev.parent = dev;
+	device_set_of_node_from_dev(&pdev->dev, dev);
 
 	ret = platform_device_add_resources(pdev, res, nres);
 	if (ret)