UBUNTU: SAUCE: Fix perf test 6: Fix missing kvm module load for s390

BugLink: https://bugs.launchpad.net/bugs/1840081

The backport from upstream misses the fact that get-/
put_events_file() does not exist in this older kernel.
Replace those by get-/put_tracing_file().
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>

tools/perf/tests/parse-events.c

@@ -22,7 +22,7 @@ static bool kvm_s390_create_vm_valid(void)
 	char *eventfile;
 	bool rc = false;
 
-	eventfile = get_events_file("kvm-s390");
+	eventfile = get_tracing_file("events/kvm-s390");
 
 	if (eventfile) {
 		DIR *mydir = opendir(eventfile);
@@ -31,7 +31,7 @@ static bool kvm_s390_create_vm_valid(void)
 			rc = true;
 			closedir(mydir);
 		}
-		put_events_file(eventfile);
+		put_tracing_file(eventfile);
 	}
 
 	return rc;