arm64: dts: qcom: sc7280: Add interconnect properties for USB

Add interconnect properties in USB DT nodes for sc7280.

Signed-off-by: Sandeep Maheswaram <sanm@codeaurora.org>
Reviewed-by: Matthias Kaehlcke <mka@chromium.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Link: https://lore.kernel.org/r/1627880576-22391-1-git-send-email-sanm@codeaurora.org


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