media: dt-bindings: media: ovti,ov9282: Add optional regulators

The OV9282 image sensor takes 3 voltage supplies, so
define the relevant regulators.
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

Documentation/devicetree/bindings/media/i2c/ovti,ov9282.yaml

@@ -36,6 +36,15 @@ properties:
     description: Reference to the GPIO connected to the XCLR pin, if any.
     maxItems: 1
 
+  avdd-supply:
+    description: Analog voltage supply, 2.8 volts
+
+  dvdd-supply:
+    description: Digital core voltage supply, 1.2 volts
+
+  dovdd-supply:
+    description: Digital I/O voltage supply, 1.8 volts
+
   port:
     additionalProperties: false
     $ref: /schemas/graph.yaml#/$defs/port-base