Mainlining Linux Sunxi SoC AW USB

Hi,

I'd like to cleanup and mainline Linux Sunxi SoC AW USB host driver [1].

What are the most ugly parts which should be replaced? Loading module does not
complain about anything?
[267044.912155] awusb: loading out-of-tree module taints kernel.
[267044.912257] awusb: module verification failed: signature and/or required key missing - tainting kernel
[267044.913399] usbcore: registered new interface driver allwinner
[267044.913401] awusb: v0.5:AW USB driver

BTW should it go to the host/Kconfig or misc/Kconfig or elsewhere?

Thanks for info.

Kind regards,
Petr

[1] https://github.com/linux-sunxi/sunxi-livesuite/blob/master/awusb/awusb.c