Remove build_only and add harness type needed for the sample/test to
allow running with sanitycheck and on devices once we have harness
support.
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
This sample tesecase provides sample code :-
1. Triggers Low Power tasks into nrf52 SOC (CONST LAT and LOW PWR)
2. Triggers System Off state.
3. Wake up device through port Event by GPIO (Button 1).
Signed-off-by: Youvedeep Singh <youvedeep.singh@intel.com>