Merge changes from topic "equalizer"

* changes:
  Initialize native Sensor object correctly
  Clarify sensor NDK struct has to be backward compatible
  [sensor] Clarify sequence requirement between setEventRate and enable
  sensorservice: Android.mk -> Android.bp
  Checking exisitence before calling editValueFor in SensorDevice
  Adding package name for HIDL connection and default package name
  Fix hidl_ssvc_poll thread issues
  Use appendFormat instead of append when passing arguments
  Synchronous resource recover  mechanism for ISensorEventConnection
  Check key before edit value in countFlushCompleteEventsLocked
  Support custom permission, slight adjust of dumpsys print
  sensors: pass sensor handle along with injected event
  Adding OWNERS files for services/sensorservice, libs/sensor