Plane: enable MPU9250 for Linux build

ArduPlane/ArduPlane.pde

@@ -245,6 +245,8 @@ AP_InertialSensor_Oilpan ins( &apm1_adc );
 AP_InertialSensor_Flymaple ins;
 #elif CONFIG_INS_TYPE == CONFIG_INS_L3G4200D
 AP_InertialSensor_L3G4200D ins;
+#elif CONFIG_INS_TYPE == CONFIG_INS_MPU9250
+AP_InertialSensor_MPU9250 ins;
 #else
   #error Unrecognised CONFIG_INS_TYPE setting.
 #endif // CONFIG_INS_TYPE

ArduPlane/config.h

@@ -112,7 +112,7 @@
 #elif CONFIG_HAL_BOARD == HAL_BOARD_LINUX
  # define BATTERY_VOLT_PIN      -1
  # define BATTERY_CURR_PIN      -1
- # define CONFIG_INS_TYPE CONFIG_INS_MPU6000
+ # define CONFIG_INS_TYPE CONFIG_INS_MPU9250
  # define CONFIG_BARO          AP_BARO_MS5611
  # define CONFIG_MS5611_SERIAL AP_BARO_MS5611_SPI
  # define CONFIG_COMPASS  AP_COMPASS_HMC5843

ArduPlane/defines.h

@@ -205,6 +205,7 @@ enum log_messages {
 #define CONFIG_INS_FLYMAPLE 5
 #define CONFIG_INS_L3G4200D 6
 #define CONFIG_INS_VRBRAIN  7
+#define CONFIG_INS_MPU9250  8
 
 // barometer driver types
 #define AP_BARO_BMP085   1