GPU OC tweak
devfreq: Add Exynos 5420 MIF voltage control TNX Andreilux for this
devfreq: Add Exynos 5420 INT voltage control TNX Andreilux for this
INT/MIF fix
BROKEN - MIF OC - only part finished dont merge
Revert "BROKEN - MIF OC - only part finished dont merge"

This reverts commit d6022ca02a75ef430298b50bc076a427d50e10d5.