pdc202xx_old: wire test_irq() method for PDC2026x

In the commit e0321fbe6d34b4bb514fb6daff9e0859e5d76001 (pdc202xx_old:
implement test_irq() method (take 2)) I forgot to modify
'pdc2026x_port_ops'... :-/

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/ide/pdc202xx_old.c b/drivers/ide/pdc202xx_old.c
index c5f3841..42ad794 100644
--- a/drivers/ide/pdc202xx_old.c
+++ b/drivers/ide/pdc202xx_old.c
@@ -241,6 +241,7 @@
 static const struct ide_port_ops pdc2026x_port_ops = {
 	.set_pio_mode		= pdc202xx_set_pio_mode,
 	.set_dma_mode		= pdc202xx_set_mode,
+	.test_irq		= pdc202xx_test_irq,
 	.cable_detect		= pdc2026x_cable_detect,
 };