arm64: dts: qcom: sdm670: add interconnects

The interconnects for Snapdragon 670 can be controlled. Add their
corresponding nodes in the device tree.

Signed-off-by: Richard Acayan <mailingradian@gmail.com>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230201010020.84586-2-mailingradian@gmail.com