arm64: dts: qcom: ipq8074: add dedicated qcom,ipq8074-dwc3 compatible

Add dedicated compatible for DWC3 USB node name to allow more accurate
DT schema matching.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20220504131923.214367-8-krzysztof.kozlowski@linaro.org


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>