MTD: OneNAND: interrupt based wait support

  We can use the two methods to wait.
  1. polling: read interrupt status register
  2. interrupt: use kernel ineterrupt mechanism

  To use interrupt method, you first connect onenand interrupt pin to your
platform and configure interrupt properly

Signed-off-by: Kyungmin Park <kyungmin.park at samsung.com>
diff --git a/drivers/mtd/onenand/generic.c b/drivers/mtd/onenand/generic.c
index af06a80..cdf80c6 100644
--- a/drivers/mtd/onenand/generic.c
+++ b/drivers/mtd/onenand/generic.c
@@ -63,6 +63,7 @@
 	}
 
 	info->onenand.mmcontrol = pdata->mmcontrol;
+	info->onenand.irq = platform_get_irq(pdev, 0);
 
 	info->mtd.name = pdev->dev.bus_id;
 	info->mtd.priv = &info->onenand;