[MIPS] IP27: Invoke setup_irq for timer interrupt so proc stats will be shown.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/sgi-ip27/ip27-timer.c b/arch/mips/sgi-ip27/ip27-timer.c
index d7aab9a..029d779b 100644
--- a/arch/mips/sgi-ip27/ip27-timer.c
+++ b/arch/mips/sgi-ip27/ip27-timer.c
@@ -244,6 +244,10 @@
 	irq_desc[irqno].status |= IRQ_PER_CPU;
 
 	rt_timer_irq = irqno;
+	/*
+	 * Only needed to get /proc/interrupt to display timer irq stats
+	 */
+	setup_irq(irqno, &rt_irqaction);
 }
 
 void __init ip27_time_init(void)