ARM: dts: msm: introduce bus topology for msmtitanium

Introduce bus topology for msmtitanium. This is a representation
of the bus connections in the SOC and allows the bus driver
to setup bandwidth requests from clients for the paths desired.

Change-Id: I2253c7ff8c4f3d418a1e5713729e9170f32a2e19
Signed-off-by: Kiran Gunda <kgunda@codeaurora.org>