Add READ_DREAM_STATE to the settings list

Settings application needs the previleged permission to
get AoD supression status by using PowerManager API

Bug: 173425264
Change-Id: I5da006b7c88dc36d3eefebc559f2a2f3ab50823f
Test: Manual & bootup device
(cherry picked from commit 8a888b97)
Merged-In: I5da006b7c88dc36d3eefebc559f2a2f3ab50823f