Specify BSD three clause license in spec file header.
Specify BSD three clause license in spec file header.

Change-Id: I0ebc0a8469f3dd58c16c4d1fc3388e2a466e02ab
Signed-off-by: Christopher M. Cantalupo <9cf3ecca60a3dd7112ab0e7250bedb8a752e3958@intel.com>

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