CPUFREQ Alucard GOV: small tune of cpus_down_rate to reduce idle drain.

*I see that any small app that create small load < 10% make gov
to rise freqs too high without any need.
so drain on idle + music app is higher than expected.
also heat building up without need.

this change effect bench testes on low load, for 1 fps.
but battery is more important.
Kernel 8.6