perf/x86/amd/uncore: Detect available DF counters

mainline inclusion
from mainline-v6.0-rc1
commit 16b48c3f
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I5YLE2


CVE: NA

--------------------------------

If AMD Performance Monitoring Version 2 (PerfMonV2) is
supported, use CPUID leaf 0x80000022 EBX to detect the
number of Data Fabric (DF) PMCs. This offers more
flexibility if the counts change in later processor
families.

Signed-off-by: Sandipan Das <sandipan.das@amd.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/bac7b2806561e03f2acc7fdc9db94f102df80e1d.1652954372.git.sandipan.das@amd.com


Signed-off-by: Xie Haocheng <haocheng.xie@amd.com>