ARM: dts: msm: Add smcinvoke node for SM6150

Current SMCInvoke based framework supports communication between TZ
and HLOS where objects are owned by TZ i.e. services are provided
by TZ. However, if TZ needs a service from Linux, it has to invoke
operation on an object owned by Linux. Such objects are called
local objects which could be either callabck objects or memory objects.
Callback objects provide services such as operations on a file. Memory
objects provide large memory sharing facility between TZ and Linux.
Adding smcinvoke node to support local objects.

Change-Id: If4574d21dc9cf685752a87d611cc957f9759788b
Signed-off-by: Mohamed Sunfeer <msunfeer@codeaurora.org>