control allocation: introduce parameter SYS_CTRL_ALLOC & unify build targets

src/lib/systemlib/system_params.c

@@ -265,3 +265,20 @@ PARAM_DEFINE_INT32(SYS_BL_UPDATE, 0);
  * @group System
  */
 PARAM_DEFINE_INT32(SYS_FAILURE_EN, 0);
+
+
+/**
+ * Enable Dynamic Control Allocation
+ *
+ * If disabled, the existing mixing implementation is used.
+ * If enabled, dynamic control allocation with runtime configuration of the
+ * mixing and output functions is used.
+ *
+ * Note: this is work-in-progress and not all vehicle types are supported yet.
+ *
+ * @boolean
+ * @reboot_required true
+ * @group System
+ */
+PARAM_DEFINE_INT32(SYS_CTRL_ALLOC, 0);
+