dt-bindings: i2c: qcom-cci: Document SDM670 compatible

The CCI on the Snapdragon 670 is the interface for controlling camera
hardware over I2C. Add the compatible so it can be added to the SDM670
device tree.

Signed-off-by: Richard Acayan <mailingradian@gmail.com>
Reviewed-by: Vladimir Zapolskiy <vladimir.zapolskiy@linaro.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Andi Shyti <andi.shyti@kernel.org>

Documentation/devicetree/bindings/i2c/qcom,i2c-cci.yaml

@@ -27,6 +27,7 @@ properties:
           - enum:
               - qcom,sc7280-cci
               - qcom,sc8280xp-cci
+              - qcom,sdm670-cci
               - qcom,sdm845-cci
               - qcom,sm6350-cci
               - qcom,sm8250-cci
@@ -139,6 +140,24 @@ allOf:
             - const: cci
             - const: camss_ahb
 
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - qcom,sdm670-cci
+    then:
+      properties:
+        clocks:
+          minItems: 4
+          maxItems: 4
+        clock-names:
+          items:
+            - const: camnoc_axi
+            - const: soc_ahb
+            - const: cpas_ahb
+            - const: cci
+
   - if:
       properties:
         compatible: