Implement permission revoke with reason

The reason is passed to app exit info so a given app can get more
information about why their app was killed in the event of permission
revoke.

Test: atest RevokePermissionTest ActivityManagerAppExitInfoTest#testPermissionChangeWithReason
Fixes: 159659620
Change-Id: Id711667eb2c1579ecb2a1b83a62af3cc7862d5f6
8 files changed