Ubuntu support for kpatch-build

At this point the module does build (i.e. kpatch-build is correct);
however, the addresses in the generated vmlinux don't match that
of the running kernel so the modules fail to load with an ftrace
registration error. So that is something to be investigated.

Signed-off-by: Seth Jennings <sjenning@redhat.com>
Merge pull request #153 from spartacus06/ubuntu-support

Ubuntu support for kpatch-build