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/sound/soc/codecs/sgtl5000.c b/sound/soc/codecs/sgtl5000.c
index d15695d..fc7ab30 100644
--- a/sound/soc/codecs/sgtl5000.c
+++ b/sound/soc/codecs/sgtl5000.c
@@ -833,7 +833,7 @@
 	ldo->voltage = voltage;
 
 	ldo->dev = regulator_register(&ldo->desc, codec->dev,
-					  init_data, ldo);
+					  init_data, ldo, NULL);
 	if (IS_ERR(ldo->dev)) {
 		int ret = PTR_ERR(ldo->dev);