fix recursion for config change

- update mTempConfig from mCurConfig first to decide if
  config is changed or not. This fixes recursion of putting
  new config again from reconfigureDisplay
- ignore setNewConfiguration if there is no change in configuration
  This fixes another recursion due to config change -> app restart
  loop

bug: 28381048

Change-Id: I4c2e6072b269baf9fa11d4b8073f0800c0e0d28d