Add airframe .post scripts on NuttX targets

ROMFS/CMakeLists.txt

@@ -83,6 +83,7 @@ add_custom_command(
 		${romfs_gen_root_dir}/init.d/rcS
 		${romfs_gen_root_dir}/init.d/rc.serial
 		${romfs_gen_root_dir}/init.d/rc.autostart
+		${romfs_gen_root_dir}/init.d/rc.autostart.post
 		romfs_copy.stamp
 	COMMAND ${CMAKE_COMMAND} -E remove_directory ${romfs_gen_root_dir}
 	# TODO: we should only copy the files in ${romfs_copy_files}

ROMFS/px4fmu_common/init.d/rcS

@@ -490,6 +490,13 @@ else
 	#
 	sh /etc/init.d/rc.logging
 
+	#
+	# Set additional parameters and env variables for selected AUTOSTART.
+	#
+	if ! param compare SYS_AUTOSTART 0
+	then
+		sh /etc/init.d/rc.autostart.post
+	fi
 
 	if ! param compare SYS_PARAM_VER ${PARAM_DEFAULTS_VER}
 	then