ARM: dts: msm: Disable ATOS feature for smmu for sm8150

Due to HW errata on the eCATS functionality, doing TBU halt
while data traffic is in progress can cause a system hang.
Disabling ATOS/eCATS is the only way of working around this
errata.

Change-Id: I565687d89536da0524bb8f9bdae377f26cef45c3
Signed-off-by: Sudarshan Rajagopalan <sudaraja@codeaurora.org>