cpufreq: IKCS: Allow configurable switching frequencies
cpufreq: ondemand-sec: Adjust A7 up frequency to 1500MHz

Target frequency will be squashed down to stock levels in the IKCS driver if the user chooses not to overclock.
cpufreq: Enforce policies in relation to CA7 frequency hole
cpufreq: ondemand-sec: Fix governor being stuck on A7 cores
cpufreq: Remove Ondemand-SEC game mode
cpufreq: Remove Ondemand-SEC hotplug logic
cpufreq: Add a standalone hotplug driver
cpufreq: Update IKCS to Exynos 5420 state

- Boot voltage lookup
- Fix EMA voltage setting
- Various small changes