cmake remove circular linking and reorganize

- px4_add_module now requires MAIN
 - px4_add_library doesn't automatically link

src/drivers/navio_rgbled/CMakeLists.txt

@@ -34,14 +34,11 @@
 px4_add_module(
 	MODULE drivers__navio_rgbled
 	MAIN navio_rgbled
-	COMPILE_FLAGS
 	SRCS
 		navio_rgbled.cpp
 	DEPENDS
-		platforms__common
 		drivers__linux_gpio
-		lib__led
+		led
 	)
 
 #add_subdirectory(test)
-# vim: set noet ft=cmake fenc=utf-8 ff=unix :

src/drivers/navio_rgbled/test/CMakeLists.txt

@@ -40,6 +40,5 @@ add_executable(navio_rgbled_test
 target_link_libraries(navio_rgbled_test
 	drivers__navio_rgbled
 	drivers__navio_gpio
-	platforms__posix__px4_layer
 	df_driver_framework
 	)