QUIPC: add permisions to quipc_main, quipc_igsn and lowi-server

--added "qcom_diag" permissions to quipc_main, quipc_igsn and lowi-server
which is needed by diag API

Change-Id: I00dc8a81208a362ca18e381792b421c5b6223cb9
Merge "QUIPC: add permisions to quipc_main, quipc_igsn and lowi-server"