NVIDIA have just released driver 440.31, and details are here:  https://devtalk.nvidia.com/default/topic/1065987/announcements-and-news/linux-solaris-and-freebsd-driver-440-31-long-lived-branch-release-/

I have tested this with Kernel 5.4-rc6, and – as mentioned in the release notes – there is no annoying ‘Module.symvers…‘ message any more.

Robert Gadsdon.  November 4th, 2019.