[PARISC] Fix up parisc irq handling for genirq changes

Clean up enough to get things compiling again in the interim.

Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
diff --git a/arch/parisc/kernel/irq.c b/arch/parisc/kernel/irq.c
index 5b8803c..c53bfeb 100644
--- a/arch/parisc/kernel/irq.c
+++ b/arch/parisc/kernel/irq.c
@@ -209,7 +209,7 @@
 ** Then use that to get the Transaction address and data.
 */
 
-int cpu_claim_irq(unsigned int irq, struct hw_interrupt_type *type, void *data)
+int cpu_claim_irq(unsigned int irq, struct irq_chip *type, void *data)
 {
 	if (irq_desc[irq].action)
 		return -EBUSY;