libs/utils/trace_analysis: report capacity thresholds when available
libs/utils/trace_analysis: report capacity thresholds when available

When an energy model if available we can add big/LITTLE capacities and
TIP thresholds in the task signals plot.

Signed-off-by: Patrick Bellasi <431c86f368affbc3148c4669fbd465131f7e82cb@arm.com>

bjackman/lisa,bjackman/lisa,mdigiorgio/lisa,arnoldlu/lisa,joelagnel/lisa,credp/lisa,mdigiorgio/lisa,credp/lisa,ARM-software/lisa,JaviMerino/lisa,arnoldlu/lisa,credp/lisa,joelagnel/lisa,ARM-software/lisa,ARM-software/lisa,ARM-software/lisa,credp/lisa