ARM: dts: msm: add smcinvoke node for sdmmagpie

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: Ia7a017fcc103c3a6ec22438ff5391fdc9354f992
Signed-off-by: Monika Singh <monising@codeaurora.org>