gpio_led removed dependancy on CONFIG_ARCH_BOARD_xxxx

The gpio leg can use either the FMU GPIO_SERVO (Aux Pins)
  or the FMUv1 style IO pins.

  We define either LED_ON_SERVO_GPIO or LED_ON_EXT_GPIO_AND_PIO
  based on if the board_config provides GPIO_SERVO_1 or
  GPIO_EXT_1.

  For LED_ON_SERVO_GPIO we further define GPIO_MIN_SERVO_PIN and
  the GPIO_MAX_SERVO_PIN based on the highest GPIO_SERVO_x provided
  by the board_config

  When base the ability to use the PX4PIO not in the existance of
  the path but on the define BOARD_USES_PX4PIO

src/modules/gpio_led/gpio_led.c

@@ -56,6 +56,45 @@
 #include <drivers/drv_gpio.h>
 #include <modules/px4iofirmware/protocol.h>
 
+#if defined(BOARD_HAS_FMU_GPIO) && defined(GPIO_SERVO_1)
+#  define LED_ON_SERVO_GPIO
+#  define PIN_NAME "AUX OUT 1"
+
+
+/* Minimum pin number */
+#  define GPIO_MIN_SERVO_PIN 1
+
+/* Maximum */
+#  if defined(GPIO_SERVO_16)
+#    define GPIO_MAX_SERVO_PIN 16
+#  elif defined(GPIO_SERVO_15)
+#    define GPIO_MAX_SERVO_PIN 15
+#  elif defined(GPIO_SERVO_14)
+#    define GPIO_MAX_SERVO_PIN 14
+#  elif defined(GPIO_SERVO_13)
+#    define GPIO_MAX_SERVO_PIN 13
+#  elif defined(GPIO_SERVO_12)
+#    define GPIO_MAX_SERVO_PIN 12
+#  elif defined(GPIO_SERVO_11)
+#    define GPIO_MAX_SERVO_PIN 11
+#  elif defined(GPIO_SERVO_10)
+#    define GPIO_MAX_SERVO_PIN 10
+#  elif defined(GPIO_SERVO_9)
+#    define GPIO_MAX_SERVO_PIN 9
+#  elif defined(GPIO_SERVO_8)
+#    define GPIO_MAX_SERVO_PIN 8
+#  elif defined(GPIO_SERVO_7)
+#    define GPIO_MAX_SERVO_PIN 7
+#  elif defined(GPIO_SERVO_6)
+#    define GPIO_MAX_SERVO_PIN 6
+#  endif
+#endif
+
+#if defined(BOARD_HAS_FMU_GPIO) && defined(GPIO_EXT_1)
+#  define LED_ON_EXT_GPIO_AND_PIO
+#  define PIN_NAME "PX4FMU GPIO_EXT1"
+#endif
+
 struct gpio_led_s {
 	struct work_s work;
 	int gpio_fd;
@@ -69,6 +108,7 @@ struct gpio_led_s {
 	int counter;
 };
 
+
 static struct gpio_led_s *gpio_led_data;
 static bool gpio_led_started = false;
 
@@ -81,7 +121,7 @@ void gpio_led_cycle(FAR void *arg);
 int gpio_led_main(int argc, char *argv[])
 {
 	if (argc < 2) {
-#ifdef CONFIG_ARCH_BOARD_PX4FMU_V1
+#if defined(LED_ON_EXT_GPIO_AND_PIO)
 		errx(1, "usage: gpio_led {start|stop} [-p <1|2|a1|a2|r1|r2>]\n"
 		     "\t-p\tUse pin:\n"
 		     "\t\t1\tPX4FMU GPIO_EXT1 (default)\n"
@@ -93,13 +133,7 @@ int gpio_led_main(int argc, char *argv[])
 		    );
 #endif
 
-#if defined(CONFIG_ARCH_BOARD_AUAV_X21)          || \
+#if defined(LED_ON_SERVO_GPIO)
-	defined(CONFIG_ARCH_BOARD_PX4FMU_V2)         || \
-	defined(CONFIG_ARCH_BOARD_PX4FMU_V4)         || \
-	defined(CONFIG_ARCH_BOARD_PX4FMU_V4PRO)      || \
-	defined(CONFIG_ARCH_BOARD_PX4FMU_V5)         || \
-	defined(CONFIG_ARCH_BOARD_MINDPX_V2)         || \
-	defined(CONFIG_ARCH_BOARD_PX4NUCLEOF767ZI_V1)
 		errx(1, "usage: gpio_led {start|stop} [-p <n>]\n"
 		     "\t-p <n>\tUse specified AUX OUT pin number (default: 1)"
 		    );
@@ -118,22 +152,16 @@ int gpio_led_main(int argc, char *argv[])
 			int pin = 1;
 
 			/* pin name to display */
-#ifdef CONFIG_ARCH_BOARD_PX4FMU_V1
+#if defined(LED_ON_EXT_GPIO_AND_PIO)
-			char *pin_name = "PX4FMU GPIO_EXT1";
+			char *pin_name = PIN_NAME;
 #endif
-#if defined(CONFIG_ARCH_BOARD_AUAV_X21)          || \
+#if defined(LED_ON_SERVO_GPIO)
-	defined(CONFIG_ARCH_BOARD_PX4FMU_V2)         || \
+			char pin_name[sizeof(PIN_NAME) + 2] = PIN_NAME;
-	defined(CONFIG_ARCH_BOARD_PX4FMU_V4)         || \
-	defined(CONFIG_ARCH_BOARD_PX4FMU_V4PRO)      || \
-	defined(CONFIG_ARCH_BOARD_PX4FMU_V5)         || \
-	defined(CONFIG_ARCH_BOARD_MINDPX_V2)         || \
-	defined(CONFIG_ARCH_BOARD_PX4NUCLEOF767ZI_V1)
-			char pin_name[] = "AUX OUT 1";
 #endif
 
 			if (argc > 2) {
 				if (!strcmp(argv[2], "-p")) {
-#ifdef CONFIG_ARCH_BOARD_PX4FMU_V1
+#if defined(LED_ON_EXT_GPIO_AND_PIO)
 
 					if (!strcmp(argv[3], "1")) {
 						use_io = false;
@@ -169,17 +197,12 @@ int gpio_led_main(int argc, char *argv[])
 						errx(1, "unsupported pin: %s", argv[3]);
 					}
 
-#endif
+#endif // defined(LED_ON_EXT_GPIO_AND_PIO)
-#if defined(CONFIG_ARCH_BOARD_AUAV_X21)          || \
+
-	defined(CONFIG_ARCH_BOARD_PX4FMU_V2)         || \
+#if defined(LED_ON_SERVO_GPIO)
-	defined(CONFIG_ARCH_BOARD_PX4FMU_V4)         || \
-	defined(CONFIG_ARCH_BOARD_PX4FMU_V4PRO)      || \
-	defined(CONFIG_ARCH_BOARD_PX4FMU_V5)         || \
-	defined(CONFIG_ARCH_BOARD_MINDPX_V2)         || \
-	defined(CONFIG_ARCH_BOARD_PX4NUCLEOF767ZI_V1)
 					unsigned int n = strtoul(argv[3], NULL, 10);
 
-					if (n >= 1 && n <= 6) {
+					if (n >= GPIO_MIN_SERVO_PIN && n <= GPIO_MAX_SERVO_PIN) {
 						use_io = false;
 						pin = 1 << (n - 1);
 						snprintf(pin_name, sizeof(pin_name), "AUX OUT %d", n);
@@ -188,7 +211,7 @@ int gpio_led_main(int argc, char *argv[])
 						errx(1, "unsupported pin: %s", argv[3]);
 					}
 
-#endif
+#endif // defined(LED_ON_SERVO_GPIO)
 				}
 			}
 
@@ -227,19 +250,14 @@ void gpio_led_start(FAR void *arg)
 {
 	FAR struct gpio_led_s *priv = (FAR struct gpio_led_s *)arg;
 
-	char *gpio_dev;
+	char *gpio_dev = PX4FMU_DEVICE_PATH;
 
-#if defined(PX4IO_DEVICE_PATH)
+#if defined(BOARD_USES_PX4IO)
 
 	if (priv->use_io) {
 		gpio_dev = PX4IO_DEVICE_PATH;
-
-	} else {
-		gpio_dev = PX4FMU_DEVICE_PATH;
 	}
 
-#else
-	gpio_dev = PX4FMU_DEVICE_PATH;
 #endif
 
 	/* open GPIO device */