dt-bindings: interconnect: Add Qualcomm SC8180x DT bindings

Add compatibles and port definitions for the SC8180x RPMH interconnect
providers.

Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org>
[bjorn: Split defines from driver patch and added binding update]
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20210723194243.3675795-1-bjorn.andersson@linaro.org


Signed-off-by: Georgi Djakov <djakov@kernel.org>