AP_HAL: Navio: add defs for BoardLED

libraries/AP_HAL/board/linux.h

@@ -145,6 +145,11 @@
  * 240x240 crop rescaled to 64x64 */
 #define HAL_FLOW_PX4_FOCAL_LENGTH_MILLIPX (2.1 / (3.0 * 2.0 * 240 / 64))
 #elif CONFIG_HAL_BOARD_SUBTYPE == HAL_BOARD_SUBTYPE_LINUX_NAVIO
+#define HAL_GPIO_A_LED_PIN 0
+#define HAL_GPIO_B_LED_PIN 1
+#define HAL_GPIO_C_LED_PIN 2
+#define HAL_GPIO_LED_ON HIGH
+#define HAL_GPIO_LED_OFF LOW
 #define HAL_BOARD_LOG_DIRECTORY "/var/APM/logs"
 #define HAL_BOARD_TERRAIN_DIRECTORY "/var/APM/terrain"
 #define HAL_BOARD_STORAGE_DIRECTORY "/var/APM"