Fix some regulator documentation

This fixes a spelling error and an API function signature mismatch
in the regulator documentation.

Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>

Documentation/power/regulator/overview.txt

@@ -29,7 +29,7 @@ Some terms used in this document:-
 
 
   o PMIC         - Power Management IC. An IC that contains numerous regulators
-                   and often contains other susbsystems.
+                   and often contains other subsystems.
 
 
   o Consumer     - Electronic device that is supplied power by a regulator.

Documentation/power/regulator/regulator.txt

@@ -10,8 +10,9 @@ Registration
 
 Drivers can register a regulator by calling :-
 
-struct regulator_dev *regulator_register(struct device *dev,
-	struct regulator_desc *regulator_desc);
+struct regulator_dev *regulator_register(struct regulator_desc *regulator_desc,
+	struct device *dev, struct regulator_init_data *init_data,
+	void *driver_data);
 
 This will register the regulators capabilities and operations to the regulator
 core.