AP_Radio: allow build of AP_Radio under PX4

libraries/AP_Radio/AP_Radio.cpp

@@ -152,9 +152,11 @@ bool AP_Radio::init(void)
     case RADIO_TYPE_CYRF6936:
         driver = new AP_Radio_cypress(*this);
         break;
+#if CONFIG_HAL_BOARD == HAL_BOARD_CHIBIOS
     case RADIO_TYPE_CC2500:
         driver = new AP_Radio_cc2500(*this);
         break;
+#endif
     default:
         break;
     }

libraries/AP_Radio/AP_Radio_cc2500.cpp

@@ -7,12 +7,10 @@
 
 #pragma GCC optimize("O0")
 
+#if CONFIG_HAL_BOARD == HAL_BOARD_CHIBIOS
 #ifdef HAL_RCINPUT_WITH_AP_RADIO
 
 #include <AP_Math/AP_Math.h>
-#if CONFIG_HAL_BOARD == HAL_BOARD_PX4
-#include <board_config.h>
-#endif
 #include "AP_Radio_cc2500.h"
 #include <utility>
 #include <stdio.h>
@@ -1085,4 +1083,4 @@ void AP_Radio_cc2500::check_fw_ack(void)
 }
 
 #endif // HAL_RCINPUT_WITH_AP_RADIO
-
+#endif // CONFIG_HAL_BOARD == HAL_BOARD_CHIBIOS

libraries/AP_Radio/AP_Radio_cc2500.h

@@ -21,13 +21,8 @@
  */
 
 #include "AP_Radio_backend.h"
-#if CONFIG_HAL_BOARD == HAL_BOARD_PX4
+#if CONFIG_HAL_BOARD == HAL_BOARD_CHIBIOS
-#include <nuttx/arch.h>
-#include <systemlib/systemlib.h>
-#include <drivers/drv_hrt.h>
-#elif CONFIG_HAL_BOARD == HAL_BOARD_CHIBIOS
 #include "hal.h"
-#endif
 #include "telem_structure.h"
 #include "driver_cc2500.h"
 
@@ -210,3 +205,5 @@ private:
 };
 
 
+#endif // CONFIG_HAL_BOARD == HAL_BOARD_CHIBIOS
+