Documentation: Snapshot of msm device tree binding document

This snapshot of msm DT binding is taken as of msm-4.14 commit
<02ff79e5>. (Merge "perf: don't zombie certain events
in perf_event_release_kernel").

Change-Id: Ibbce147739d5a2be839559b622e7dc0a2182bb65
Signed-off-by: Rishabh Bhatnagar <rishabhb@codeaurora.org>