not-for-us: kvm, linux-modules-di-s390

[Bill Allombert <Bill.Allombert@math.u-bordeaux1.fr>]

Hello Debian-68k porters,

kvm and linux-modules-di-s390 should be marked not-for-us since
they are i386 and s390 only packages.

Cheers,
-- 
Bill. <ballombe@debian.org>

Imagine a large blue swirl here.