AP_GPS: Take responsibility for logging the GPS if the EKF wants logging

libraries/AP_GPS/AP_GPS.cpp

@@ -695,8 +695,7 @@ void AP_GPS::update_instance(uint8_t instance)
 
 #ifndef HAL_BUILD_AP_PERIPH
     if (data_should_be_logged &&
-        should_log() &&
-        !AP::ahrs().have_ekf_logging()) {
+        (should_log() || AP::ahrs().have_ekf_logging())) {
         AP::logger().Write_GPS(instance);
     }