alpha: Convert to new irq function names

Scripted with coccinelle.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
diff --git a/arch/alpha/kernel/sys_titan.c b/arch/alpha/kernel/sys_titan.c
index 8c13a0c..fea0e46 100644
--- a/arch/alpha/kernel/sys_titan.c
+++ b/arch/alpha/kernel/sys_titan.c
@@ -179,7 +179,7 @@
 {
 	long i;
 	for (i = imin; i <= imax; ++i) {
-		set_irq_chip_and_handler(i, ops, handle_level_irq);
+		irq_set_chip_and_handler(i, ops, handle_level_irq);
 		irq_set_status_flags(i, IRQ_LEVEL);
 	}
 }