cgroup/misc: openeuler_defconfig open misc config by default

hulk inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I8X117



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OLK6-6 cgroup v2 is going to be enabled, so is misc controller,
misc will be used for new feature that controls files fd,
just open misc config in openeuler_defconfig by default.

Signed-off-by: Chen Ridong <chenridong@huawei.com>