Well I don't think the kernel if it had libusb stopped supporting it.
Because this is pretty much what changed in it https://github.com/USBhost/FIRE-ICE/...b43956d78004c9
the defconfig. I ripped the defconfig from the kernel image, and I applied the needed changes to my defconfig.
if you want the N defconfig here you go https://github.com/USBhost/FIRE-ICE/...91d3e60c9ccc7e
I don't think there is any /dev/bus/ directory, never mind /dev/bus/usb/... but I'd feel more positive about that if I had root to verify.