ARM64: dts: msm: Add smcinvoke node for trinket

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 callback 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: Ie24c2389964115ca4569999a9e4d57f2f842e339
Signed-off-by: Ramandeep Trehan <rtrehan@codeaurora.org>