New comment by Vinfall on void-packages repository

https://github.com/void-linux/void-packages/pull/52910#issuecomment-2481765401

Comment:
Note on Linux 6.12 since it's out and a LTS release, quoted from [vbox changelog](https://www.virtualbox.org/wiki/Changelog-7.1):

> Linux Guest Additions: Introduce initial support for kernel 6.12 (NOTE: In kernel 6.12, KVM initializes virtualization on module loading by default. This prevents [VirtualBox](https://www.virtualbox.org/wiki/VirtualBox) VMs from starting. In order to avoid this, either add "kvm.enable_virt_at_load=0" parameter into kernel command line or unload corresponding kvm_XXX module)

`linux` package in Void bumped to 6.12 since https://github.com/void-linux/void-packages/commit/db3491817616807376de52625ae471991faec8a9 so it's now effective.