DataService: Defining policies for CNE/DPM/UCE

- adding policies and permissions for UCE HAL service
  and UCE HAL client to run and execute.
- Separate system partition sepolicy and hal macros
  from vendor partition for dataservice_app and DPM.

CRs-fixed: 2019046
Change-Id: I4460dc2542bec0812ba40e28176475877a1e9797