dt-bindings: interconnect: Add Qualcomm SM8250 DT bindings

The Qualcomm SM8250 platform has several bus fabrics that could be
controlled and tuned dynamically according to the bandwidth demand.

Signed-off-by: Jonathan Marek <jonathan@marek.ca>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Sibi Sankar <sibis@codeaurora.org>
Link: https://lore.kernel.org/r/20200728023811.5607-4-jonathan@marek.ca


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