regulator: sky81452: Modify Device Tree structure

Signed-off-by: NGyungoh Yoo <jack.yoo@skyworksinc.com>
Signed-off-by: NMark Brown <broonie@kernel.org>

Documentation/devicetree/bindings/regulator/sky81452-regulator.txt

 SKY81452 voltage regulator
 
 Required properties:
+- regulator node named lout.
 - any required generic properties defined in regulator.txt
 
 Optional properties:
@@ -9,8 +10,9 @@ Optional properties:
 Example:
 
 	regulator {
-		/* generic regulator properties */
-		regulator-name = "touch_en";
+		lout {
+			regulator-name = "sky81452-lout";
 			regulator-min-microvolt = <4500000>;
 			regulator-max-microvolt = <8000000>;
 		};
+	};