MC_AIRMODE: move parameter definition to mixer_module

Makes sure that the parameter is included for the builds that need it.

src/lib/mixer_module/params.c

@@ -0,0 +1,18 @@
+
+/**
+ * Multicopter air-mode
+ *
+ * The air-mode enables the mixer to increase the total thrust of the multirotor
+ * in order to keep attitude and rate control even at low and high throttle.
+ *
+ * This function should be disabled during tuning as it will help the controller
+ * to diverge if the closed-loop is unstable (i.e. the vehicle is not tuned yet).
+ *
+ * Enabling air-mode for yaw requires the use of an arming switch.
+ *
+ * @value 0 Disabled
+ * @value 1 Roll/Pitch
+ * @value 2 Roll/Pitch/Yaw
+ * @group Multicopter Attitude Control
+ */
+PARAM_DEFINE_INT32(MC_AIRMODE, 0);

src/modules/mc_att_control/mc_att_control_params.c

@@ -609,21 +609,3 @@ PARAM_DEFINE_FLOAT(MC_TPA_RATE_D, 0.0f);
  */
 PARAM_DEFINE_FLOAT(MC_DTERM_CUTOFF, 0.f);
 
-/**
- * Multicopter air-mode
- *
- * The air-mode enables the mixer to increase the total thrust of the multirotor
- * in order to keep attitude and rate control even at low and high throttle.
- *
- * This function should be disabled during tuning as it will help the controller
- * to diverge if the closed-loop is unstable (i.e. the vehicle is not tuned yet).
- *
- * Enabling air-mode for yaw requires the use of an arming switch.
- *
- * @value 0 Disabled
- * @value 1 Roll/Pitch
- * @value 2 Roll/Pitch/Yaw
- * @group Multicopter Attitude Control
- */
-PARAM_DEFINE_INT32(MC_AIRMODE, 0);
-