Dear Maintainer,

using qemubuilder for armel and armhf in an automated build environment
causes some extra work due to different qemu machine types. Using the
same kernel for both architectures like in all other cases is not
possible since a different qemu machine type is choosen. Add a
qemu machine type overwrite to be able to force the same machine type
for armel and armhf.

Tested in my build environment with machine type "virt" to build
armhf- and armel-Packages for wheezy, jessie, stretch and sid.

Regards
    Bene