ARM: dts: msm: add sensor clock controller device for SM8150

On SA8155 boards, the application processor owns the sensor
clocks.  Therefore, add a sensor clock controller device so
that client devices can utilize sensor clocks.  Only enable
this clock controller device for SA8155 boards.

Change-Id: If8b1b33bf7b3da2bd9bae4239cd6b967c4122b2d
Signed-off-by: David Collins <collinsd@codeaurora.org>