Can nRF51422 or nRF51822 can be used as bluetooth device for Raspberry pi?

Can nRF51422 or nRF51822 can be used as bluetooth device for Raspberry pi?

As I can see on the terminal Linux, the hciconfig log says, raspberry pi 3's Bluetooth device is connected to board with UART Connection.

I'm wondering If I Can use nRF51 devices as Bluetooth Device?

I mean can it be recognized as native Bluetooth device for linux that I Can easily use with simply hciconfig tool?

(Cause I'm trying to do this is, RPi 3's bluetooth chip is pretty Unstable to use with. (It disconnect's itself even if I dont controll it. Maybe Power Problem?).