Add test that achieved frequency matches requested frequency
Add test that achieved frequency matches requested frequency

Change-Id: I7f9baca2ddb7a401fcbbeb3e515a1744ca29ef8b
Signed-off-by: Christopher M. Cantalupo <9cf3ecca60a3dd7112ab0e7250bedb8a752e3958@intel.com>

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