perf: hisi: delete global enable pmu from xxx_write_counter()

driver inclusion
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I7C2U9


CVE: NA

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UC PMU global enable register be setup in pmu callback pmu::enable(),
which also be will setup in pmu::start()->xxx_write_counter(). And it
will start statistical information when callback pmu:start() return,
not is pmu:enable() return. Therefore the driver counter counts more
data than normal.

Fixes: 5ed05cb2 ("drivers/perf: hisi: Add support for HiSilicon UC PMU driver")
Signed-off-by: Junhao He <hejunhao3@huawei.com>