There is a new pull request by classabbyamp against master on the void-packages repository

https://github.com/classabbyamp/void-packages dkms-cross
https://github.com/void-linux/void-packages/pull/46332

cross-built kernel/dkms improvements
- dkms: allow limiting jobs, add missing dep
    - some less-powerful platforms may be overwhelmed by the default `-j$(nproc)`. Allow overriding this by setting `DKMS_JOBS` in `/etc/default/dkms`
    - `bc` is needed for `make prepare0` on kernel 6.1+, which is run on cross.
    - see also: https://github.com/void-linux/void-packages/pull/46152#issuecomment-1741479613
- linux6.1: include files necessary for dkms on cross
- linux6.5: include files necessary for dkms on cross

The same fix could be applied to linux6.3 and linux6.4, but with the impending zfs 2.1.13 bump (#46304), I don't see much point.

fixes #44807

#### Testing the changes
- I tested the changes in this PR: **briefly** (these fixes worked for 6.1 on rpi-kernel)

@moabeat-berlin, @r-ricci, @Calandracas606: please test

A patch file from https://github.com/void-linux/void-packages/pull/46332.patch is attached