UPSTREAM: cgroup: Add named hierarchy disabling to cgroup_no_v1 boot param

It can be useful to inhibit all cgroup1 hierarchies especially during
transition and for debugging.  cgroup_no_v1 can block hierarchies with
controllers which leaves out the named hierarchies.  Expand it to
cover the named hierarchies so that "cgroup_no_v1=all,named" disables
all cgroup1 hierarchies.

Signed-off-by: Tejun Heo <tj@kernel.org>
Suggested-by: Marcin Pawlowski <mpawlowski@fb.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Change-Id: Ibd093dd9b70d15402a21db3c1ef56005ebc7f99e
(cherry picked from commit 3fc9c12d27b4ded4f1f761a800558dab2e6bbac5)
Bug: 154548692
Signed-off-by: Marco Ballesio <balejs@google.com>