perf test perftool_testsuite: Add missing description

Properly name the test cases of perftool_testsuite instead of the
license being taken as the name for 'perf test'.

Signed-off-by: Veronika Molnarova <vmolnaro@redhat.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lore.kernel.org/r/20250113182605.130719-2-vmolnaro@redhat.com


Signed-off-by: Michael Petlan <mpetlan@redhat.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>