[PATCH] ia64: fix cast in irq_lsapic.c

This patch just updates the cast in irq_lsapic.c to use the cpumask_t
type for the noop cast assignment to smp_affinity.

arch/ia64/kernel/irq_lsapic.c

@@ -34,5 +34,5 @@ struct hw_interrupt_type irq_type_ia64_lsapic = {
 	.disable =	lsapic_noop,
 	.ack =		lsapic_noop,
 	.end =		lsapic_noop,
-	.set_affinity =	(void (*)(unsigned int, unsigned long)) lsapic_noop
+	.set_affinity =	(void (*)(unsigned int, cpumask_t)) lsapic_noop
 };