[ALPS03908242] Add SEPolicy

[Detail]
System properties like init.svc.vendor.* cannot be dumped
in mobilelog. It is because moblelogd doesnt have permission to
access them. The status of VoLTE-stack cannot be shown in
mobilelog.

[Solution]
Add get permission to access those system properties

MTK-Commit-Id: 73a911ef7934cdb4640809343f64c9815c43f1be

Change-Id: I6c11e5a397826c45ca83cb19ce6cb114aee59f53
CR-Id:ALPS03908242
Feature:VoLTE (Voice over LTE)