APM: fixed hil build

ArduPlane/sensors.pde

@@ -1,10 +1,5 @@
 // -*- tab-width: 4; Mode: C++; c-basic-offset: 4; indent-tabs-mode: nil -*-
 
-// Sensors are not available in HIL_MODE_ATTITUDE
-#if HIL_MODE != HIL_MODE_ATTITUDE
-
-void ReadSCP1000(void) {}
-
 static void init_barometer(void)
 {
     barometer.calibrate(mavlink_delay);
@@ -37,8 +32,6 @@ static void zero_airspeed(void)
     gcs_send_text_P(SEVERITY_LOW,PSTR("zero airspeed calibrated"));
 }
 
-#endif // HIL_MODE != HIL_MODE_ATTITUDE
-
 static void read_battery(void)
 {
 	if(g.battery_monitoring == 0) {

libraries/AP_Baro/AP_Baro_BMP085_hil.cpp

@@ -16,6 +16,10 @@ bool AP_Baro_BMP085_HIL::init(AP_PeriodicProcess * scheduler)
 	return true;
 }
 
+void AP_Baro_BMP085_HIL::calibrate(void (*callback)(unsigned long t))
+{
+    // nothing to do
+}
 
 // Read the sensor. This is a state machine
 // We read one time Temperature (state = 1) and then 4 times Pressure (states 2-5)

libraries/AP_Baro/AP_Baro_BMP085_hil.h

@@ -25,6 +25,7 @@ public:
 	int32_t get_raw_pressure();
 	int32_t get_raw_temp();
 	void setHIL(float Temp, float Press);
+    void calibrate(void (*callback)(unsigned long t));
 };
 
 #endif //  __AP_BARO_BMP085_HIL_H__