slub: Rename all *unfreeze_partials* functions to *put_partials*

Since all partial slabs on the CPU partial list are not frozen anymore,
we don't unfreeze when moving cpu partial slabs to node partial list,
it's better to rename these functions.

Signed-off-by: Chengming Zhou <zhouchengming@bytedance.com>
Reviewed-by: Vlastimil Babka <vbabka@suse.cz>
Tested-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Reviewed-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>