[patch v1]rtc: fix for DA9052/53 rtc device registration

[Ashish Jangam <ashish.jangam@kpitcummins.com>]

This patch adds supports for the virtual irq since now MFD only handles virtual irq
Without this patch rtc device will fail in registration.

This patch is for Linux stable version 3.8.x 

Signed-off-by: Ashish Jangam <ashish.jangam@kpitcummins.com>
---
 drivers/rtc/rtc-da9052.c |    8 ++++----
 1 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/rtc/rtc-da9052.c b/drivers/rtc/rtc-da9052.c
index 60b826e..e22c950 100644
--- a/drivers/rtc/rtc-da9052.c
+++ b/drivers/rtc/rtc-da9052.c
@@ -239,10 +239,10 @@ static int da9052_rtc_probe(struct platform_device *pdev)
 
 	rtc->da9052 = dev_get_drvdata(pdev->dev.parent);
 	platform_set_drvdata(pdev, rtc);
-	rtc->irq = platform_get_irq_byname(pdev, "ALM");
-	ret = request_threaded_irq(rtc->irq, NULL, da9052_rtc_irq,
-				   IRQF_TRIGGER_LOW | IRQF_ONESHOT,
-				   "ALM", rtc);
+	rtc->irq =  DA9052_IRQ_ALARM;
+
+	ret = da9052_request_irq(rtc->da9052, rtc->irq, "ALM",
+				da9052_rtc_irq, rtc);
 	if (ret != 0) {
 		rtc_err(rtc->da9052, "irq registration failed: %d\n", ret);
 		return ret;
-- 
1.7.1