Configure SELinux for PowerManager Caches

Setup SELinux to allow the world to read, and system_server to write, a
property used as an indicator that we need to refresh local caches
for PowerManager.isPowerSaveMode and PowerManager.isInteractive.

Bug: 140788621
Test: Flashed build and tested that phone boots and does not crash
as PowerManager operations take place.

Change-Id: I3e7e513756c8d881295721c2729cd37ad3bec8b8
1 file changed