Input: pwm-vibrator - correct pwms in DT binding example

In the example for the pwm-vibrator bindings, pwm8 is the direction pin,
and pwm9 is the enable pin. The pwms on the vibrator node has these two
values swapped so this patch corrects it.
Signed-off-by: Brian Masney <masneyb@onstation.org>
Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

Documentation/devicetree/bindings/input/pwm-vibrator.txt

@@ -58,8 +58,8 @@ Example from Motorola Droid 4:
 
 	vibrator {
 		compatible = "pwm-vibrator";
-		pwms = <&pwm8 0 1000000000 0>,
-		       <&pwm9 0 1000000000 0>;
+		pwms = <&pwm9 0 1000000000 0>,
+                       <&pwm8 0 1000000000 0>;
 		pwm-names = "enable", "direction";
 		direction-duty-cycle-ns = <1000000000>;
 	};