mach-tegra: allow setting of individual cpu frequencies
The previous implementation did only save the frequency max and only
for all cpus in one variable (=all cpus will always have the same freq).
This commits allows min/max setting of frequencies per cpu independently.(showp)

https://github.com/showp1984/bricked-grouper-3.x/commit/0ae94b6b6917b85c5caf46ad05690a9296ea362f