ARM: dts: msm: Introduce bus topology for ATOLL

Bus topology is the representation of bus connections
in SOC and is required for bus scaling driver to serve
the bandwidth requests from clients.

Change-Id: Ib7204524da5ab8a752a64426fc7ac8e3b139034a
Signed-off-by: Odelu Kukatla <okukatla@codeaurora.org>