platform/x86: intel_pmc_core: Add Comet Lake (CML) platform support to intel_pmc_core driver

Add Comet Lake to the list of the platforms that intel_pmc_core driver
supports for pmc_core device.

Just like Ice Lake, Comet Lake can also reuse all the Cannon Lake PCH
IPs. No additional effort is needed to enable but to simply reuse them.

Cc: Mario Limonciello <mario.limonciello@dell.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Srinivas Pandruvada <srinivas.pandruvada@intel.com>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Kan Liang <kan.liang@intel.com>
Cc: David E. Box <david.e.box@intel.com>
Cc: Rajneesh Bhardwaj <rajneesh.bhardwaj@intel.com>
Cc: Tony Luck <tony.luck@intel.com>
Signed-off-by: Gayatri Kammela <gayatri.kammela@intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>