regulator: pass additional of_node to regulator_register()

With device tree support for regulators, its needed that the
regulator_dev->dev device has the right of_node attached.
To be able to do this add an additional parameter to the
regulator_register() api, wherein the dt-adapted driver can
then pass this additional info onto the regulator core.

Signed-off-by: Rajendra Nayak <rnayak@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/drivers/regulator/ab8500.c b/drivers/regulator/ab8500.c
index 6e1ae69..e91b8dd 100644
--- a/drivers/regulator/ab8500.c
+++ b/drivers/regulator/ab8500.c
@@ -822,7 +822,7 @@
 
 		/* register regulator with framework */
 		info->regulator = regulator_register(&info->desc, &pdev->dev,
-				&pdata->regulator[i], info);
+				&pdata->regulator[i], info, NULL);
 		if (IS_ERR(info->regulator)) {
 			err = PTR_ERR(info->regulator);
 			dev_err(&pdev->dev, "failed to register regulator %s\n",