irqchip/irq-vt8500: Switch to irq_domain_create_*()

irq_domain_add_*() interfaces are going away as being obsolete now.
Switch to the preferred irq_domain_create_*() ones. Those differ in the
node parameter: They take more generic struct fwnode_handle instead of
struct device_node. Therefore, of_fwnode_handle() is added around the
original parameter.

Note some of the users can likely use dev->fwnode directly instead of
indirect of_fwnode_handle(dev->of_node). But dev->fwnode is not
guaranteed to be set for all, so this has to be investigated on case to
case basis (by people who can actually test with the HW).

[ tglx: Split out from combo patch to avoid merge conflicts ]

Signed-off-by: Jiri Slaby (SUSE) <[e-mail]>
Signed-off-by: Thomas Gleixner <[e-mail]>
Link: https://lore.kernel.org/all/[e-mail]

drivers/irqchip/irq-vt8500.c

···
 		goto err_free;
 	}
 
-	intc->domain = irq_domain_add_linear(node,
-					     64,
-					     &vt8500_irq_domain_ops,
-					     intc);
+	intc->domain = irq_domain_create_linear(of_fwnode_handle(node), 64,
+						&vt8500_irq_domain_ops, intc);
 	if (!intc->domain) {
 		pr_err("%s: Unable to add irq domain!\n", __func__);
 		ret = -ENOMEM;