arm64: dts: sc7180: Add interconnect provider DT nodes

Add the DT nodes for the network-on-chip interconnect buses found
on sc7180-based platforms.

Signed-off-by: Odelu Kukatla <okukatla@codeaurora.org>
Link: https://lore.kernel.org/r/1582646384-1458-4-git-send-email-okukatla@codeaurora.org


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