dt-bindings: firmware: qcom,scm: document QCS615 SCM

Add the compatible for Qualcomm QCS615 SCM.

Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Qingqing Zhou <quic_qqzhou@quicinc.com>
Link: https://lore.kernel.org/r/20241105032107.9552-2-quic_qqzhou@quicinc.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>

Documentation/devicetree/bindings/firmware/qcom,scm.yaml

@@ -42,6 +42,7 @@ properties:
           - qcom,scm-msm8996
           - qcom,scm-msm8998
           - qcom,scm-qcm2290
+          - qcom,scm-qcs615
           - qcom,scm-qcs8300
           - qcom,scm-qdu1000
           - qcom,scm-sa8255p