Tools: ardupilotwaf: Add navigator board

Signed-off-by: Patrick José Pereira <patrickelectric@gmail.com>

Tools/ardupilotwaf/boards.py

@@ -621,6 +621,16 @@ class linux(Board):
             # Avoid infinite recursion
             bld.options.upload = False
 
+class navigator(linux):
+    toolchain = 'arm-linux-gnueabihf'
+
+    def configure_env(self, cfg, env):
+        super(navigator, self).configure_env(cfg, env)
+
+        env.DEFINES.update(
+            CONFIG_HAL_BOARD_SUBTYPE='HAL_BOARD_SUBTYPE_LINUX_NAVIGATOR',
+        )
+
 class erleboard(linux):
     toolchain = 'arm-linux-gnueabihf'