nios2: Switch to irq_domain_create_linear()

irq_domain_add_linear() is going away as being obsolete now. Switch to
the preferred irq_domain_create_linear(). 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).

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

Author: Jiri Slaby (SUSE)

arch/nios2/kernel/irq.c

@@ -69,7 +69,8 @@ void __init init_IRQ(void)
 
 	BUG_ON(!node);
 
-	domain = irq_domain_add_linear(node, NIOS2_CPU_NR_IRQS, &irq_ops, NULL);
+	domain = irq_domain_create_linear(of_fwnode_handle(node),
+					  NIOS2_CPU_NR_IRQS, &irq_ops, NULL);
 	BUG_ON(!domain);
 
 	irq_set_default_domain(domain);