gpio: of: make example syntactically correct

The ';' was missing. And cosmetic: there was a space too much.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

Documentation/devicetree/bindings/gpio/gpio.txt

@@ -33,12 +33,12 @@ The following example could be used to describe GPIO pins used as device enable
 and bit-banged data signals:
 
 	gpio1: gpio1 {
-		gpio-controller
-		 #gpio-cells = <2>;
+		gpio-controller;
+		#gpio-cells = <2>;
 	};
 	gpio2: gpio2 {
-		gpio-controller
-		 #gpio-cells = <1>;
+		gpio-controller;
+		#gpio-cells = <1>;
 	};
 	[...]