perf evlist: Fix the class prefix for 'struct evlist' 'add' evsel methods

To differentiate from libperf's 'struct perf_evlist' methods.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/builtin-top.c

@@ -1627,7 +1627,7 @@ int cmd_top(int argc, const char **argv)
 		goto out_delete_evlist;
 
 	if (!top.evlist->core.nr_entries &&
-	    perf_evlist__add_default(top.evlist) < 0) {
+	    evlist__add_default(top.evlist) < 0) {
 		pr_err("Not enough memory for event selector list\n");
 		goto out_delete_evlist;
 	}