[dvfs] Fixed bug with trying to set the max_frequency to lower than 1.0.
[dvfs] Fixed bug with trying to set the max_frequency to lower than 1.0.

fhijaz/Graphite,fhijaz/Graphite,mit-carbon/Graphite,nkawahara/Graphite,victorisildur/Graphite,8l/Graphite,victorisildur/Graphite,8l/Graphite,mit-carbon/Graphite,fhijaz/Graphite,8l/Graphite,fhijaz/Graphite,nkawahara/Graphite,victorisildur/Graphite,mit-carbon/Graphite,nkawahara/Graphite,victorisildur/Graphite,mit-carbon/Graphite,nkawahara/Graphite,8l/Graphite