Enable CONFIG_RUST support (for dkms bcachefs)

Describe the bug

I am using bcache via dkms and when loading the module it warns:

[ 234.975483] bcachefs (sda1): kernel does not have CONFIG_RUST enabled; this will be required for bcachefs in the near future - please alert your distribution or kernel developers if your kernel does not support CONFIG_RUST

Can you please support CONFIG_RUST so that modules like bcachefs can be loaded.

Steps to reproduce the behaviour

N/A

Device (s)

Raspberry Pi 5

System

I use Arch Linux Arm but use the officially raspberry pi kernels that are tracked from this repo as the upstream.

r:~ # uname -a
Linux r 6.18.20-1-rpi-16k #1 SMP PREEMPT Wed Mar 25 15:05:23 UTC 2026 aarch64 GNU/Linux

Logs

No response

Additional context

No response