intelli_plug: only apply suspend/resume logic if active

Signed-off-by: Paul Reioux <reioux@gmail.com>
intellidemand: cumulative updateis to version 5.5 + adapt frequencies for Z

also remove unused legacy stuff

Signed-off-by: Paul Reioux <reioux@gmail.com>

Conflicts:
	drivers/cpufreq/Kconfig
	drivers/cpufreq/cpufreq_intellidemand.c

Change-Id: Iad86d5b124eba6de065d1bbfbd42b69e3a2ffa8f