[OE-core] rebuilding external kernel modules when kernel changed

[Pascal Bach]

> What version are you using?
I'm using poky, the latest krogoth branch
> Are you using rm_work?
No rm_work is not used.
>
> Check https://bugzilla.yoctoproject.org/show_bug.cgi?id=9352 
I think the issue is relate but not the same. For me the simplest solution i found was to make sure do_make_scripts of any kernel module was executed after the kernel was rebuilt.
But I didn't find a way to make bitbake do this automatically.