media: dt-bindings: media: i2c: max9286: Add property to select bus width

The GMSL serial data bus width is normally selected by the BWS pin, but
it can also be configured by software. Add a DT property that allows
overriding the value of the BWS-selected bus width to support systems
whose BWS pin doesn't result in the correct value.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

Documentation/devicetree/bindings/media/i2c/maxim,max9286.yaml

@@ -50,6 +50,14 @@ properties:
   '#gpio-cells':
     const: 2
 
+  maxim,bus-width:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    enum: [ 24, 27, 32 ]
+    description: |
+      The GMSL serial data bus width. This setting is normally controlled by
+      the BWS pin, but may be overridden with this property. The value must
+      match the configuration of the remote serializers.
+
   maxim,i2c-remote-bus-hz:
     enum: [ 8470, 28300, 84700, 105000, 173000, 339000, 533000, 837000 ]
     default: 105000