Sensors: New parameter for baro priority

This allows to give external barometers priority if they are present.

src/modules/sensors/sensor_params.c

@@ -221,3 +221,15 @@ PARAM_DEFINE_INT32(SENS_EXT_I2C_PRB, 1);
  * @group Sensors
  */
 PARAM_DEFINE_INT32(SENS_IMU_MODE, 1);
+
+/**
+ * Enable internal barometers
+ *
+ * For systems with an external barometer, this should be set to false to make sure that the external is used.
+ *
+ * @boolean
+ * @reboot_required true
+ * @category system
+ * @group Sensors
+ */
+PARAM_DEFINE_INT32(SENS_INT_BARO_EN, 1);