Add new permissions

This adds new permissions required when setting the time /zone in
response to telephony signals and when setting the time / zone manually
along the lines of "principle of least privilege".

The intent is to later restrict the number of distinct processes that
can manipulate the device system clock / time zone property directly so
that all time changes go through the time / time zone detector services,
which can enforce policy, log the reasons for changes, and so on.

Bug: 140712361
Test: atest com.android.server.timedetector
Change-Id: Iabd3a5f449ad2ef2b6581475ef2535a4a8a88ef9