Revert "drivers: cpufreq: Send a uevent when governor changes"

This reverts commit 6af0569e3b5d7f9e09af96d7aff79f950f611743.
import interactive gov from git://github.com/Andromadus/htc7x30-3.0
configs: use interactive by default
acpuclock-7x30: rework low end vdd