Revert "drivers: cpufreq: Fix Fixing 1.6Ghz and 1Ghz"

This reverts commit 9de3dbcfef4409f404375e922dd334c4068880bc.
Revert "drivers: cpufreq: exynos5410 A7 Overclock to 1.5Ghz"

This reverts commit 303776dc83e9f1aa92bca22afa2aabddd830d1ef.