perf test - add coresight quality tests

This adds a range of perf tests that piggy-back on the shell tests to
run perf record on a range of sample workloads to collect traces of
AUX data to verify corsight instruction traces do actually collect
a reasonable amount of data (ensure perf itself can set this up
correctly and extract the data from the perf daat traces but also that
the kernel driver manages to set everything up right so we collect
something).

These tests are meant to exercise various workloads that may either
run large stretches of instructions, small rtight loops, access lots
of memory or veavily load all cpu cores with as many threads as
possible. They will pass or fail based on if they meet a minimum
threshold of data collected. They will be skipped if the resulting
test tools have not been compiled. These test tools will only compile
when CORESIGHT=y because they are specifically made to test coresight
and some contain aarch64 assembly.