support BLE page turner for X3/X4

[bacbangduonganki-cell]

Please! I want to use my page turner but there is no bluetooth on my X3 with crossink :(

[uxjulia]

BLE uses up a lot of RAM and causes a lot of instability. You can try it out with Crosspoint's bluetooth beta available at their website via flash tools, but it won't be coming to Crossink on the X3/X4 devices.