ARM: dts: gemini-dlink-dir-685: rename gpio-i2c to i2c

gemini-dlink-dir-685.dt.yaml: gpio-i2c: $nodename:0: 'gpio-i2c' does not match '^i2c(@.*)?'
>From schema: /usr/src/linux-next/Documentation/devicetree/bindings/i2c/i2c-gpio.yaml
Signed-off-by: Corentin Labbe <clabbe@baylibre.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

arch/arm/boot/dts/gemini-dlink-dir-685.dts

@@ -169,7 +169,7 @@ map0 {
 	 * The touchpad input is connected to a GPIO bit-banged
 	 * I2C bus.
 	 */
-	gpio-i2c {
+	i2c {
 		compatible = "i2c-gpio";
 		/* Collides with ICE */
 		sda-gpios = <&gpio0 5 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;