Fix issue when running on systems with offline CPUs
Fix issue when running on systems with offline CPUs

- Change geopm_sched_num_cpu() to return number of
  configured CPUs, not number of online CPUs.
- This enables proper indexing based on the result
  bitmask returned by sched_getaffinity(2).

Change-Id: I76c6a654794a91ae32863bf3d7cb2441ffd4d0d2
Signed-off-by: Christopher M. Cantalupo <9cf3ecca60a3dd7112ab0e7250bedb8a752e3958@intel.com>

cmcantalupo/geopm,cmcantalupo/geopm,geopm/geopm,geopm/geopm,cmcantalupo/geopm,cmcantalupo/geopm,geopm/geopm,cmcantalupo/geopm,geopm/geopm,geopm/geopm