Rework patch 5b57bf462b [lxc: fixup VPATH builds]
since the new version of LXC refactored one of the files and it no longer
applies. Provide a fix for what's left.
Signed-off-by: Bogdan Purcareata <bogdan.purcareata@freescale.com>
Signed-off-by: Bruce Ashfield <bruce.ashfield@windriver.com>