perf/x86/intel/cstate: Add Clearwater Forest support

perf/x86/intel/cstate: Add Clearwater Forest support

Clearwater Forest is based on the Darkmont Atom microarchitecture.
>From the perspective of C-state residency profiling, it supports the
same residency counters as Sierra Forest: CC1/CC6, PC2/PC6, and MC6.

Please note that the C1E residency counter can only be read via PMT,
not MSR. Therefore, tools relying on the perf_event framework cannot
access the C1E residency.

Signed-off-by: Zhenyu Wang <zhenyuw.linux@gmail.com>
Signed-off-by: Zide Chen <zide.chen@intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Kan Liang <kan.liang@linux.intel.com>
Reviewed-by: Dapeng Mi <dapeng1.mi@linux.intel.com>
Link: https://patch.msgid.link/20251023223754.1743928-2-zide.chen@intel.com