cpufreq: interactive: Stop boostpulse from doing the same thing twice

Looking over this, I found that when we were boosted, we set the highspeed
freq in more places than necessary. Remove the boosted bool from
cpufreq_interactive_timer and add a check for hispeed load in the void
cpufreq_interactive_boost, so that we only need to do this check once when
boosting. If our cpu load doesn't meet hispeed_load, we simply break out
early; which should make boostpulse slightly more battery friendly.

Signed-off-by: Luis Cruz <ljc2491@gmail.com>
acpuclock-8960: Don't UC so low

Signed-off-by: Luis Cruz <ljc2491@gmail.com>