Merge branch 'irq/for-block' into irq/core

Pull the irq affinity managing code which is in a seperate branch for block
developers to pull.

kernel/irq/internals.h

@@ -107,6 +107,8 @@ static inline void unregister_handler_proc(unsigned int irq,
 					   struct irqaction *action) { }
 #endif
 
+extern bool irq_can_set_affinity_usr(unsigned int irq);
+
 extern int irq_select_affinity_usr(unsigned int irq, struct cpumask *mask);
 
 extern void irq_set_thread_affinity(struct irq_desc *desc);