perf/x86/uncore: Add L3 PMU support for Hygon family 18h model 6h

hygon inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I92HA8


CVE: NA

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Adjust the L3 PMU slicemask and threadmask for Hygon family 18h
model 6h processor.

Signed-off-by: Pu Wen <puwen@hygon.cn>