mm: add config isolation for psi under cgroup v1

hulk inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I8BCV4



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Add CONFIG_PSI_CGROUP_V1 to separate feature of psi under cgroup v1
from baseline.

Signed-off-by: Chen Wandun <chenwandun@huawei.com>
Signed-off-by: Lu Jialin <lujialin4@huawei.com>