There is an updated pull request by classabbyamp against master on the void-packages repository

https://github.com/classabbyamp/void-packages the-rpi-unification-of-2024
https://github.com/void-linux/void-packages/pull/39442

rpi*-kernel: update to 5.15.68, merge templates
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#### Testing the changes
- I tested the changes in this PR: **YES**|**briefly**|**NO**

### TODO
- [ ] test if `zImage` works for `aarch64*` (it might, according to [the note here](https://www.raspberrypi.com/documentation/computers/config_txt.html#arm_64bit))
- [ ] test upgrade on all platforms
     - [ ] ensure upgrade cannot fail (due to `config.txt` being in `rpi-firmware` and a conf file, this is not necessarily trivial)
- [ ] fix build error on `armv7l*`: `/usr/lib/gcc/armv7l-linux-gnueabihf/10.2.1/plugin/include/system.h:687:10: fatal error: gmp.h: No such file or directory`


A patch file from https://github.com/void-linux/void-packages/pull/39442.patch is attached