cpufreq: interactive: prevents the frequency to directly raise above the hispeed_freq from a lower frequency.

When the load was below go_hispeed_load, there is a possibility that
choose_freq() would return a frequency which would be higher than the
hispeed_freq. According to the policy we should first jump to the
hispeed_freq, stay there for above_hispeed_delay and then be allowed to
raise higher than that.

Added a check to prevent the frequency to be directly raised to
something higher than the hispeed_freq.

Change-Id: Icda5d848dd9beadcc18835082ddf269732c75bd0
Signed-off-by: Ruchi Kandoi <kandoiruchi@google.com>

[backport to linux 3.0]