perf kvm: Use evlist layer api when possible

No need for layer violations when a proper evlist api is available.

Signed-off-by: Igor Lubashev <ilubashe@akamai.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lore.kernel.org/lkml/1571795693-23558-4-git-send-email-ilubashe@akamai.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/builtin-kvm.c

@@ -998,7 +998,7 @@ static int kvm_events_live_report(struct perf_kvm_stat *kvm)
 			done = perf_kvm__handle_stdin();
 
 		if (!rc && !done)
-			err = fdarray__poll(fda, 100);
+			err = evlist__poll(kvm->evlist, 100);
 	}
 
 	evlist__disable(kvm->evlist);