ARM: dts: qcom: sdx55: use generic node names for USB

Device node names should be generic which is also expected by USB
bindings:

  qcom-sdx55-t55.dtb: dwc3@a600000: $nodename:0: 'dwc3@a600000' does not match '^usb(@.*)?'

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20230619170151.65505-2-krzysztof.kozlowski@linaro.org


Signed-off-by: Bjorn Andersson <andersson@kernel.org>