media: dt-bindings: qcom,msm8996-venus: document interconnects

Venus on Qualcomm MSM8996 defines interconnects:

  apq8096-db820c.dtb: video-codec@c00000: Unevaluated properties are not allowed ('interconnect-names', 'interconnects' were unexpected)
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-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/qcom,msm8996-venus.yaml

@@ -33,6 +33,14 @@ properties:
       - const: bus
       - const: mbus
 
+  interconnects:
+    maxItems: 2
+
+  interconnect-names:
+    items:
+      - const: video-mem
+      - const: cpu-cfg
+
   iommus:
     maxItems: 20