setup: Depend on trappy >= 3.0
setup: Depend on trappy >= 3.0

trappy has changed the API of stats.SchedConf in 0fce01a7dad8 ("stats:
SchedConf: Fix for period calculation"), the return value of period() is
changed.  This is fixed in bart in 0e83faeeee8a ("sched: Use Median for
calculation of the period of a task").

ARM-software/bart,JaviMerino/bart