media: dt-bindings: nokia,smia: Use better active polarity for reset

Generally reset signal is active low on camera sensors. The example had it
high. Make it low, and use GPIO_ACTIVE_LOW in gpio.h for that.
Signed-off-by: NSakari Ailus <sakari.ailus@linux.intel.com>
Acked-by: NRob Herring <robh@kernel.org>
Signed-off-by: NMauro Carvalho Chehab <mchehab+huawei@kernel.org>

Documentation/devicetree/bindings/media/i2c/nokia,smia.yaml

@@ -80,6 +80,8 @@ additionalProperties: false
 
 examples:
   - |
+    #include <dt-bindings/gpio/gpio.h>
+
     i2c2 {
         #address-cells = <1>;
         #size-cells = <0>;
@@ -89,7 +91,7 @@ examples:
         camera-sensor@10 {
             compatible = "nokia,smia";
             reg = <0x10>;
-            reset-gpios = <&gpio3 20 0>;
+            reset-gpios = <&gpio3 20 GPIO_ACTIVE_LOW>;
             vana-supply = <&vaux3>;
             clocks = <&omap3_isp 0>;
             clock-frequency = <9600000>;