fw/rt_config: Allow for auto determine 'max' and 'min' for other freqs
fw/rt_config: Allow for auto determine 'max' and 'min' for other freqs

Allow users to specify 'max' and 'min' for the maximum and minimum
frequencies to be set for a cpu as well as the current frequency.

lisatn/workload-automation,ARM-software/workload-automation,ARM-software/workload-automation,setrofim/workload-automation,ARM-software/workload-automation,lisatn/workload-automation,lisatn/workload-automation,ARM-software/workload-automation,setrofim/workload-automation,lisatn/workload-automation,setrofim/workload-automation,setrofim/workload-automation