perf: hisi: Extract hisi_pmu_init

mainline inclusion
from mainline-v6.0-rc1
commit e500405d
category: cleanup
bugzilla: https://gitee.com/openeuler/kernel/issues/I77IH6
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e500405dd15d956790859fa532c64d8186445372



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Extract the initialization code of hisi_pmu->pmu into a function

Signed-off-by: Chen Jun <chenjun102@huawei.com>
Link: https://lore.kernel.org/r/20220516131601.48383-1-chenjun102@huawei.com


Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Junhao He <hejunhao3@huawei.com>