perf/x86/rapl: Move the cntr_mask to rapl_pmus struct

Prepare for the addition of RAPL core energy counter support.

Move cntr_mask to rapl_pmus struct instead of adding a new global
cntr_mask for the new RAPL power_core PMU. This will also ensure that
the second "core_cntr_mask" is only created if needed (i.e. in case of
AMD CPUs).

Signed-off-by: Dhananjay Ugwekar <Dhananjay.Ugwekar@amd.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: "Gautham R. Shenoy" <gautham.shenoy@amd.com>
Reviewed-by: Zhang Rui <rui.zhang@intel.com>
Tested-by: Zhang Rui <rui.zhang@intel.com>
Link: https://lore.kernel.org/r/20241115060805.447565-10-Dhananjay.Ugwekar@amd.com