I have a M8, which is also an amlogic s802, and other BT pads work, like ipega ones, Wamo, even the OUYA one. Only sixaxis is problematic in amlogic s802. Most probably because Amlogic BT stack is kind of broken, or perhaps is SeLinux, who knows.... In freaktab there are "devs" that have the source code for your box, but they don't share it to other people, so I don't think they fix it, because I don't see much development for them. I suppose Amlogic devs will actually fix the issue.
Perhaps stane1983 is the man, or at least is the only real dev at that forum that compiles kernels, makes changes and seems to know what he is doing.
I am personally not making roms for amlogic s802, (not public ones at least) because I don't have source code, so I will leave the people with source code to make the job.