arm64: dts: sc7280: Add interconnect provider DT nodes

Add the DT nodes for the network-on-chip interconnect buses found
on sc7280-based platforms.

Signed-off-by: Odelu Kukatla <okukatla@codeaurora.org>
Link: https://lore.kernel.org/r/1619517059-12109-4-git-send-email-okukatla@codeaurora.org


[bjorn: Sorted nodes and dropped include]
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>