stats: Add power stats to test references

Change-Id: Ic827213134b199446822f128b81d4a480e777fee

stats: update for snoop filter tweak

stats: update stats to after GPU checkin

stats: bump stats to reflect ruby tester changes

stats: updates due to recent chagnesets

stats: Update stats to match cache changes

stats: Update stats for tgen to reflect CommMonitor changes

The name of the stack distance stats changed slightly when the stack
distance calculator was redesigned as a probe. Update the reference
stats to reflect this.

stats: Update stats for cache, crossbar and DRAM changes

This update includes the changes to whole-line writes, the refinement
of Read to ReadClean and ReadShared, the introduction of CleanEvict
for snoop-filter tracking, and updates to the DRAM command scheduler
for bank-group-aware scheduling.

Needless to say, almost every regression is affected.

tests: Add a regression for the stack distance calculator

Re-use the existing traffic generator regression, and enable the stack
distance calculation in the comm monitor, along with the verification
stack.

The traffic generator config is also tuned to not increase the
run-time too much (and actually have some address re-use).

stats: Bump stats for filter, crossbar and config changes

This patch bumps the stats to reflect the addition of the snoop filter
and snoop stats, the change from bus to crossbar, and the updates to
the ARM regressions that are now using a different CPU and cache
configuration. Lastly, some minor changes are expected due to the
activation cleanup of the CPUs.

stats: update stats for cache occupancy and clock domain changes

tests: Move ISA-independent tests to the NULL ISA

This patch simply takes a first step to use the NULL ISA build for
tests that do not make use of a CPU. Most of the Ruby tests could go
the same way, but to avoid duplicating a lot of compilation targets
that will have to wait until Ruby is built as a library and linked in
independently.