dt-bindings: usb: dwc3: add sdm670 compatible

The Snapdragon 670 has DWC3 USB support. Add a compatible to reflect
that.
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Richard Acayan <mailingradian@gmail.com>
Link: https://lore.kernel.org/r/20220922024656.178529-3-mailingradian@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Documentation/devicetree/bindings/usb/qcom,dwc3.yaml

@@ -26,6 +26,7 @@ properties:
           - qcom,sc7280-dwc3
           - qcom,sc8280xp-dwc3
           - qcom,sdm660-dwc3
+          - qcom,sdm670-dwc3
           - qcom,sdm845-dwc3
           - qcom,sdx55-dwc3
           - qcom,sdx65-dwc3
@@ -175,6 +176,7 @@ allOf:
               - qcom,msm8998-dwc3
               - qcom,sc7180-dwc3
               - qcom,sc7280-dwc3
+              - qcom,sdm670-dwc3
               - qcom,sdm845-dwc3
               - qcom,sdx55-dwc3
               - qcom,sm6350-dwc3
@@ -345,6 +347,7 @@ allOf:
               - qcom,msm8994-dwc3
               - qcom,qcs404-dwc3
               - qcom,sc7180-dwc3
+              - qcom,sdm670-dwc3
               - qcom,sdm845-dwc3
               - qcom,sdx55-dwc3
               - qcom,sdx65-dwc3