Update for Nvidia's gk20a linux driver needed

Dear Sirs,

I use archlinux on my shield tablet!
The driver “/usr/lib/xorg/modules/drivers/nvidia_drv.so” (taken from L4T R21.4) doesn’t work with newer X Server (ver. 1.18), caused by different EABI versions. :-(

Is it possible to get an updated driver binary file or its source code (I’d compile it by myself)?

Kind Regards,
Michael