dt-bindings: i2c: qcom-cci: Document sm8550 compatible

Add sm8550 compatible consistent with CAMSS CCI interfaces, the list of
clocks is reduced by removing "slow_ahb_src" clock, which is derived
from "cpas_ahb" clock.
Signed-off-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

@@ -31,6 +31,7 @@ properties:
               - qcom,sm6350-cci
               - qcom,sm8250-cci
               - qcom,sm8450-cci
+              - qcom,sm8550-cci
           - const: qcom,msm8996-cci # CCI v2
 
   "#address-cells":
@@ -195,6 +196,23 @@ allOf:
             - const: cpas_ahb
             - const: cci
 
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - qcom,sm8550-cci
+    then:
+      properties:
+        clocks:
+          minItems: 3
+          maxItems: 3
+        clock-names:
+          items:
+            - const: camnoc_axi
+            - const: cpas_ahb
+            - const: cci
+
 additionalProperties: false
 
 examples: