AC_Fence: updates for new AP_Baro API

libraries/AC_Fence/examples/AC_Fence_test/AC_Fence_test.pde

@@ -39,14 +39,12 @@ const AP_HAL::HAL& hal = AP_HAL_BOARD_DRIVER;
 
 AP_InertialSensor ins;
 
-// INS and Baro declaration
-#if CONFIG_HAL_BOARD == HAL_BOARD_APM2
-AP_Baro_MS5611 baro(&AP_Baro_MS5611::spi);
-#else
+#if CONFIG_HAL_BOARD == HAL_BOARD_APM1
 AP_ADC_ADS7844 adc;
-AP_Baro_BMP085 baro;
 #endif
 
+AP_Baro baro;
+
 // GPS declaration
 AP_GPS gps;
 GPS_Glitch gps_glitch(gps);