dt-bindings: soc: qcom: spm: Add MSM8939 CPU compatible

Document the "qcom,msm8939-saw2-v3.0-cpu" compatible for the CPU
Subsystem Power Manager (SPM) on the MSM8939 SoC.
Signed-off-by: Vincent Knecht <vincent.knecht@mailoo.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20221019171004.1080911-1-vincent.knecht@mailoo.org

Documentation/devicetree/bindings/soc/qcom/qcom,spm.yaml

@@ -24,6 +24,7 @@ properties:
           - qcom,msm8998-silver-saw2-v4.1-l2
           - qcom,msm8909-saw2-v3.0-cpu
           - qcom,msm8916-saw2-v3.0-cpu
+          - qcom,msm8939-saw2-v3.0-cpu
           - qcom,msm8226-saw2-v2.1-cpu
           - qcom,msm8974-saw2-v2.1-cpu
           - qcom,apq8084-saw2-v2.1-cpu