Allow network stack UID caller to retrieve cell identity

For backwards compatibility, we allow phone, system UID to
access cell identity through getServiceState. Cell broadcast
service, which is used to be part of telephony, now is running
under network stack UID. We should consider network stack UID as
trustable components like system/telephony.

Fix: 157618105
Test: Manual
Change-Id: I9b2dfc778752e130f5c7e44c4b2e45b63ac6f918
(cherry picked from commit 56cfdd1e873c6c7762f9c7a3cde6a321b85c8ce8)
1 file changed