sched/hmp: Remove capping when reporting load to the cpufreq governor

Capping load when reporting to the governor was important prior to new
scheduler guided frequency changes as intra-cluster migrations would
sometimes lead to CPU loads well in excess of 100%. With the new top
task approach however, load greater than 100% is no longer possible
except for the same conditions that were previously exempted (i.e.
inter-cluster migrations and frequency aggregation).

Change-Id: I3e4f5e39ec9ae7eeaba9a567efd245a7aec1b7ad
Signed-off-by: Syed Rameez Mustafa <rameezmustafa@codeaurora.org>