media: dt-bindings: media: nxp,imx-mipi-csi2: i.MX8MP support

The CSIS CSI-2 receiver in the i.MX8MP seems to be identical to the
version present in the i.MX8MM. Add a device-specific compatible string,
with a fallback to the i.MX8MM compatible.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

Documentation/devicetree/bindings/media/nxp,imx-mipi-csi2.yaml

@@ -22,9 +22,14 @@ description: |-
 
 properties:
   compatible:
-    enum:
-      - fsl,imx7-mipi-csi2
-      - fsl,imx8mm-mipi-csi2
+    oneOf:
+      - enum:
+          - fsl,imx7-mipi-csi2
+          - fsl,imx8mm-mipi-csi2
+      - items:
+          - enum:
+              - fsl,imx8mp-mipi-csi2
+          - const: fsl,imx8mm-mipi-csi2
 
   reg:
     maxItems: 1