sensors/vehicle_air_data: move to sensors namespace

- move params to end of class

src/modules/sensors/vehicle_air_data/VehicleAirData.cpp

@@ -36,6 +36,9 @@
 #include <px4_platform_common/log.h>
 #include <lib/ecl/geo/geo.h>
 
+namespace sensors
+{
+
 using namespace matrix;
 using namespace time_literals;
 
@@ -51,14 +54,12 @@ VehicleAirData::VehicleAirData() :
 VehicleAirData::~VehicleAirData()
 {
 	Stop();
-
 	perf_free(_cycle_perf);
 }
 
 bool VehicleAirData::Start()
 {
 	ScheduleNow();
-
 	return true;
 }
 
@@ -285,3 +286,5 @@ void VehicleAirData::PrintStatus()
 
 	_voter.print();
 }
+
+}; // namespace sensors

src/modules/sensors/vehicle_air_data/VehicleAirData.hpp

@@ -51,6 +51,8 @@
 #include <uORB/topics/sensor_correction.h>
 #include <uORB/topics/vehicle_air_data.h>
 
+namespace sensors
+{
 class VehicleAirData : public ModuleParams, public px4::ScheduledWorkItem
 {
 public:
@@ -71,10 +73,6 @@ private:
 
 	static constexpr int MAX_SENSOR_COUNT = 3;
 
-	DEFINE_PARAMETERS(
-		(ParamFloat<px4::params::SENS_BARO_QNH>) _param_sens_baro_qnh
-	)
-
 	uORB::Publication<vehicle_air_data_s> _vehicle_air_data_pub{ORB_ID(vehicle_air_data)};
 
 	uORB::Subscription _params_sub{ORB_ID(parameter_update)};
@@ -102,4 +100,9 @@ private:
 	uint8_t _priority[MAX_SENSOR_COUNT] {};
 
 	int8_t _selected_sensor_sub_index{-1};
+
+	DEFINE_PARAMETERS(
+		(ParamFloat<px4::params::SENS_BARO_QNH>) _param_sens_baro_qnh
+	)
 };
+}; // namespace sensors