Upstream runc hardcodes cpuset to use prefixes, whereas we mount cpuset with noprefix (as assumed by Android).

https://github.com/opencontainers/runc/blob/4c013a1524d42905883f242d01d0440a2e0c97e1/libcontainer/cgroups/fs/cpuset.go#L34

For now we have a local patch that hardcodes the paths without prefixes, but we should put together a patch that checks for noprefix and upstream it.