ARM: dts: msm: Add additional bus bandwidth usecase on SM8150

Add additional bus bandwidth usecase so that driver can vote
for it based on device connection speed.

Change-Id: I6ee8f2284e2a6b27edd88ff7994d0a9eb697cc72
Signed-off-by: Vamsi Krishna Samavedam <vskrishn@codeaurora.org>