mailbox: qcom-ipcc: Switch to irq_domain_create_tree()

irq_domain_add_tree() is going away as being obsolete now. Switch to
the preferred irq_domain_create_tree(). That differs in the first
parameter: It takes more generic struct fwnode_handle instead of struct
device_node. Therefore, of_fwnode_handle() is added around the
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: Fix up subject prefix ]

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

drivers/mailbox/qcom-ipcc.c

···
 	if (!name)
 		return -ENOMEM;
 
-	ipcc->irq_domain = irq_domain_add_tree(pdev->dev.of_node,
-					       &qcom_ipcc_irq_ops, ipcc);
+	ipcc->irq_domain = irq_domain_create_tree(of_fwnode_handle(pdev->dev.of_node),
+						  &qcom_ipcc_irq_ops, ipcc);
 	if (!ipcc->irq_domain)
 		return -ENOMEM;