cgroup: Changes for v6.7

* cpuset now supports remote partitions where CPUs can be reserved for
  exclusive use down the tree without requiring all the intermediate nodes
  to be partitions. This makes it easier to use partitions without modifying
  existing cgroup hierarchy.

* cpuset partition configuration behavior improvement.

* cgroup_favordynmods= boot param added to allow setting the flag on boot on
  cgroup1.

* Misc code and doc updates.
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