WIO_BG96: fix macro exclusion - use cellular

This depends on cellular drivers not netsockets (it works because both are present in
the system, not true when you use CMake).

Author: 0xc0170

targets/TARGET_STM/TARGET_STM32F4/TARGET_STM32F439xI/TARGET_WIO_BG96/ONBOARD_QUECTEL_BG96.cpp

@@ -15,7 +15,7 @@
  * limitations under the License.
  */
 
-#if MBED_CONF_NSAPI_PRESENT
+#if MBED_CONF_CELLULAR_PRESENT
 
 #include "ONBOARD_QUECTEL_BG96.h"
 
@@ -117,4 +117,4 @@ CellularDevice *CellularDevice::get_target_default_instance()
     return &device;
 }
 
-#endif // MBED_CONF_NSAPI_PRESENT
+#endif // MBED_CONF_CELLULAR_PRESENT