dt-bindings: cache: qcom,llcc: Document the QCS615 LLCC

Document the LLCC on the QCS615 platform.

The QCS615 platform has LLCC as the system cache controller. It
includes 1 LLCC instance and 1 broadcast interface.

Signed-off-by: Song Xue <quic_songxue@quicinc.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://lore.kernel.org/r/20241010-add_llcc_support_for_qcs615-v2-1-044432450a75@quicinc.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>

Author: Song Xue

Documentation/devicetree/bindings/cache/qcom,llcc.yaml

@@ -20,6 +20,7 @@ description: |
 properties:
   compatible:
     enum:
+      - qcom,qcs615-llcc
       - qcom,qdu1000-llcc
       - qcom,sa8775p-llcc
       - qcom,sar1130p-llcc
@@ -95,6 +96,7 @@ allOf:
         compatible:
           contains:
             enum:
+              - qcom,qcs615-llcc
               - qcom,sc7180-llcc
               - qcom,sm6350-llcc
     then: