powerpc: Switch irq_domain_add_nomap() to use fwnode

All irq_domain_add_*() functions are going away. PowerPC is the only
user of irq_domain_add_nomap() and there is no irq_domain_create_nomap()
complement.

Therefore, to align with the rest of the kernel, rename
irq_domain_add_nomap() to irq_domain_create_nomap() and accept a
fwnode_handle instead of a device_node.

[ tglx: Fix up subject prefix ]

Signed-off-by: Jiri Slaby (SUSE) <jirislaby@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/all/20250319092951.37667-40-jirislaby@kernel.org

Author: Jiri Slaby (SUSE)

Documentation/core-api/irq/irq-domain.rst

@@ -141,7 +141,7 @@ No Map
 
 ::
 
-	irq_domain_add_nomap()
+	irq_domain_create_nomap()
 
 The No Map mapping is to be used when the hwirq number is
 programmable in the hardware.  In this case it is best to program the

Documentation/translations/zh_CN/core-api/irq/irq-domain.rst

@@ -124,7 +124,7 @@ irq_domain_add_tree()和irq_domain_create_tree()在功能上是等价的，除
 
 ::
 
-	irq_domain_add_nomap()
+	irq_domain_create_nomap()
 
 当硬件中的hwirq号是可编程的时候，就可以采用无映射类型。 在这种情况下，最好将
 Linux IRQ号编入硬件本身，这样就不需要映射了。 调用irq_create_direct_mapping()

arch/powerpc/platforms/powermac/smp.c

@@ -190,7 +190,7 @@ static int __init psurge_secondary_ipi_init(void)
 {
 	int rc = -ENOMEM;
 
-	psurge_host = irq_domain_add_nomap(NULL, ~0, &psurge_host_ops, NULL);
+	psurge_host = irq_domain_create_nomap(NULL, ~0, &psurge_host_ops, NULL);
 
 	if (psurge_host)
 		psurge_secondary_virq = irq_create_direct_mapping(psurge_host);

arch/powerpc/platforms/ps3/interrupt.c

@@ -743,7 +743,7 @@ void __init ps3_init_IRQ(void)
 	unsigned cpu;
 	struct irq_domain *host;
 
-	host = irq_domain_add_nomap(NULL, PS3_PLUG_MAX + 1, &ps3_host_ops, NULL);
+	host = irq_domain_create_nomap(NULL, PS3_PLUG_MAX + 1, &ps3_host_ops, NULL);
 	irq_set_default_domain(host);
 
 	for_each_possible_cpu(cpu) {

include/linux/irqdomain.h

@@ -431,13 +431,13 @@ static inline struct irq_domain *irq_domain_add_linear(struct device_node *of_no
 }
 
 #ifdef CONFIG_IRQ_DOMAIN_NOMAP
-static inline struct irq_domain *irq_domain_add_nomap(struct device_node *of_node,
+static inline struct irq_domain *irq_domain_create_nomap(struct fwnode_handle *fwnode,
 					 unsigned int max_irq,
 					 const struct irq_domain_ops *ops,
 					 void *host_data)
 {
 	struct irq_domain_info info = {
-		.fwnode		= of_fwnode_handle(of_node),
+		.fwnode		= fwnode,
 		.hwirq_max	= max_irq,
 		.direct_max	= max_irq,
 		.ops		= ops,