vehicle hal update

- add release_memory_from_get to allow hal to release
  memory it has allocated in get call
- clear get call's behavior: If data is not available, should
  return immediately with VEHICLE_ERROR_NOT_READY error
- make zone separate in vehicle_prop_config_t and
  vehicle_prop_value_t: Handing of zoned property becomes
  simpler
- cleanup some data type definitions for zoned properties

bug: 27597338, 27596281
Change-Id: I7a8454b86555270fb2211e5d36b3ee06d350f8ed
3 files changed