powercap: intel_rapl: Add support for RAPTORLAKE_S

Add intel_rapl support for RAPTORLAKE_S platform, which behaves the same
as RAPTORLAKE and RAPTORLAKE_P platforms.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>