Protect the ShutdownThread from possible hangs in the telephony,
Bluetooth or NFC stack while turning off the radios.
Bug: 6585958
Change-Id: I6b448c854c5a0efb0eedd90437853ef2571e785b
This refactoring sets the stage for a follow-on change that
will make use additional functions of the power HAL.
Moved functionality from android.os.Power into PowerManagerService.
None of these functions make sense being called outside of the
system server. Moving them to the PowerManagerService makes it
easier to ensure that the power HAL is initialized exactly once.
Similarly, moved ShutdownThread out of the policy package and into
the services package where it can tie into the PowerManagerService
as needed.
Bug: 6435382
Change-Id: I958241bb124fb4410d96f5d5eb00ed68d60b29e5
