hikey: Fix stune path, as it changed with N

In N the stune cgroup is mounted under /dev/stune
instead of /sys/fs/cgroup/stune, so update the
path names.

Change-Id: Ic70da960e0d0ddd7a2286ecbfa074283bd36e921
Signed-off-by: John Stultz <john.stultz@linaro.org>
2 files changed