Add Permissions Grant for TelephonyDataService

The Telephony Data Service is a privileged service
that provides Data capabilities *to* Telephony. A
data service that provides IWLAN may also use WiFi
as an underlying connection that tunnels Telephony
data services over WiFi using IPsec. The carrier-
config-driven permissions model causes the
framework to bind to an appropriate Telephony Data
Service, for a given carrier, and that Data Service
is responsible for providing Cellular data. Thus,
The TelephonyDataService needs sufficient
permissions to access cellular info necessary for
performing signalling for IWLAN. This includes
Phone state information and location information
such as the current Wifi access points and the
current cell towers. In addition, a Telephony
Data Service may require access to IPsec if the
data service uses the Android API to establish
IPsec, which is optional today.

Bug: 66955045
Test: wip
Merged-In: Ibe4f7806a47e2a50999376ff0a5a07dc5b332953
Change-Id: Ibe4f7806a47e2a50999376ff0a5a07dc5b332953