sched,x86: enable CONFIG_SCHED_CLUSTER in openeuler_defconfig

hulk inclusion
category: feature
bugzilla: https://gitee.com/openeuler/intel-kernel/issues/I8LVOX



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Intel-SIG: enable CONFIG_SCHED_CLUSTER in openeuler_defconfig
Cluster scheduler feature backport.

Signed-off-by: Aubrey Li <aubrey.li@linux.intel.com>