cpufreq: exynos-mp-cpufreq: Add calibrated power coefficients for A57/A53 [AndreiLux]

Previous core coefficients were using the same numbers as on the Exynos 5430, which is a A15/A7 design. The Exynos 5433 however uses A57/A53 cores and do not have the same power characteristics.

Power coefficients were reverse-engineered in a full power curve analysis. This fixes power mis calculation within IPA and should allow for better power arbitration.