irqdomain: Remove __irq_domain_add()

__irq_domain_add() has been replaced by irq_domain_instanciate() and so,
it is no more used.

Simply remove it.

Signed-off-by: Herve Codina <[e-mail]>
Signed-off-by: Thomas Gleixner <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]

include/linux/irqdomain.h

···
 	/* Irq domain is hierarchical */
 	IRQ_DOMAIN_FLAG_HIERARCHY	= (1 << 0),
 
-	/* Irq domain name was allocated in __irq_domain_add() */
+	/* Irq domain name was allocated internally */
 	IRQ_DOMAIN_NAME_ALLOCATED	= (1 << 1),
 
 	/* Irq domain is an IPI domain with virq per cpu */
···
 struct irq_domain *devm_irq_domain_instantiate(struct device *dev,
 					       const struct irq_domain_info *info);
 
-struct irq_domain *__irq_domain_add(struct fwnode_handle *fwnode, unsigned int size,
-				    irq_hw_number_t hwirq_max, int direct_max,
-				    const struct irq_domain_ops *ops,
-				    void *host_data);
 struct irq_domain *irq_domain_create_simple(struct fwnode_handle *fwnode,
 					    unsigned int size,
 					    unsigned int first_irq,

kernel/irq/irqdomain.c

···
 EXPORT_SYMBOL_GPL(irq_domain_instantiate);
 
 /**
- * __irq_domain_add() - Allocate a new irq_domain data structure
- * @fwnode: firmware node for the interrupt controller
- * @size: Size of linear map; 0 for radix mapping only
- * @hwirq_max: Maximum number of interrupts supported by controller
- * @direct_max: Maximum value of direct maps; Use ~0 for no limit; 0 for no
- *              direct mapping
- * @ops: domain callbacks
- * @host_data: Controller private data pointer
- *
- * Allocates and initializes an irq_domain structure.
- * Returns pointer to IRQ domain, or NULL on failure.
- */
-struct irq_domain *__irq_domain_add(struct fwnode_handle *fwnode, unsigned int size,
-				    irq_hw_number_t hwirq_max, int direct_max,
-				    const struct irq_domain_ops *ops,
-				    void *host_data)
-{
-	struct irq_domain_info info = {
-		.fwnode		= fwnode,
-		.size		= size,
-		.hwirq_max	= hwirq_max,
-		.direct_max	= direct_max,
-		.ops		= ops,
-		.host_data	= host_data,
-	};
-	struct irq_domain *d;
-
-	d = irq_domain_instantiate(&info);
-	return IS_ERR(d) ? NULL : d;
-}
-EXPORT_SYMBOL_GPL(__irq_domain_add);
-
-/**
  * irq_domain_remove() - Remove an irq domain.
  * @domain: domain to remove
  *