I wanna use nRF52820 to make some application development.I wanna a sing-board development kit for nRF52820 ,and nRF52833DK supports development on the nRF52820 SoC and nRF52833 soc both. so ,if I buy nRF52833DK sing-board, the chip on it is nRF52833 but nRF52820,and I need buy a nRF52820 chip separately and nRF52833 DK sing-board for nRF52820 development?