cgroup: relocate cgroup_[try]get/put()

Relocate cgroup_get(), cgroup_tryget() and cgroup_put() upwards.  This
is pure code reorganization to prepare for future changes.

Signed-off-by: Tejun Heo <tj@kernel.org>
(cherry picked from commit 052c3f3a0b03651d94050d917ebc1df46a31c2f0)
Signed-off-by: Alex Shi <alex.shi@linaro.org>
1 file changed