selftests/timers: fix spelling mistake: "Asynchronous"

trivial fix to spelling mistake in printed message.

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
diff --git a/tools/testing/selftests/timers/clocksource-switch.c b/tools/testing/selftests/timers/clocksource-switch.c
index fd88e30..5ff1653 100644
--- a/tools/testing/selftests/timers/clocksource-switch.c
+++ b/tools/testing/selftests/timers/clocksource-switch.c
@@ -159,7 +159,7 @@
 	}
 
 
-	printf("Running Asyncrhonous Switching Tests...\n");
+	printf("Running Asynchronous Switching Tests...\n");
 	pid = fork();
 	if (!pid)
 		return run_tests(60);