perf/x86/intel/cstate: Cleanup duplicate attr_groups

mainline inclusion
from mainline-v6.8-rc1
commit 243218ca93037631f0224fdbefea045912cb761a
category: feature
bugzilla: https://gitee.com/openeuler/intel-kernel/issues/I8YVW5
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=243218ca93037631f0224fdbefea045912cb761a



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

The events of the cstate_core and cstate_pkg PMU have the same format.
They both need to create a "events" group (with empty attrs). The
attr_groups can be shared.

Remove the dedicated attr_groups for each cstate PMU. Use the shared
cstate_attr_groups to replace.

Intel-SIG: commit 243218ca9303 perf/x86/intel/cstate: Cleanup duplicate attr_groups
Backport SRF/GRR perf cstate support to kernel 5.10.

Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20231116142245.1233485-1-kan.liang@linux.intel.com


Signed-off-by: Yunying Sun <yunying.sun@intel.com>