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/tps65910-regulator.c b/drivers/regulator/tps65910-regulator.c
index 66d2d60..eaea9b4 100644
--- a/drivers/regulator/tps65910-regulator.c
+++ b/drivers/regulator/tps65910-regulator.c
@@ -963,7 +963,7 @@
 		pmic->desc[i].owner = THIS_MODULE;
 
 		rdev = regulator_register(&pmic->desc[i],
-				tps65910->dev, reg_data, pmic);
+				tps65910->dev, reg_data, pmic, NULL);
 		if (IS_ERR(rdev)) {
 			dev_err(tps65910->dev,
 				"failed to register %s regulator\n",