Fix the MTK test to use the same baud rate that APM does.

git-svn-id: https://arducopter.googlecode.com/svn/trunk@440 f9c3cf11-9bcb-44bc-f272-b75c42450872

libraries/AP_GPS/examples/GPS_MTK_test/GPS_MTK_test.pde

@@ -19,7 +19,7 @@ AP_GPS_MTK gps(&Serial1);
 void setup()
 {
 	Serial.begin(38400);
-	Serial1.begin(57600);
+	Serial1.begin(38400);
 	stderr = stdout;
 	gps.print_errors = true;