* This is a modified version of schedutil, introducing two new tunables: "efficient_freq" and "up_delay".
* Only raise cpufreq to the non-efficient one (higher than effcient frequencies) if the governor keeps requiring non-efficient frequencies for more than up_delay time.
* Override the new frequencies with the efficient one if the consecutive request time doesn't reach up_delay.
* The two tunables support multiple args, e.g. you can set "1248000 1401600" for "efficient_freq" and set "50 60" for "up_delay", which means it would wait 50ms before raising the frequency to 1248mhz and wait for 60ms before raising the frequency to 1401mhz.
[Flopster101: move the kconfig entry to the proper section.]
