enable submodule for liteos_a and liteos_m

default.xml

@@ -50,8 +50,8 @@
   <project name="hiviewdfx_hiview_lite" path="base/hiviewdfx/hiview_lite"/>
   <project name="iot_link" path="domains/iot/link"/>
   <project name="iothardware_peripheral" path="base/iot_hardware/peripheral"/>
-  <project name="kernel_liteos_a" path="kernel/liteos_a"/>
-  <project name="kernel_liteos_m" path="kernel/liteos_m"/>
+  <project name="kernel_liteos_a" path="kernel/liteos_a" sync-s="true"/>
+  <project name="kernel_liteos_m" path="kernel/liteos_m" sync-s="true"/>
   <project name="multimedia_audio_lite" path="foundation/multimedia/audio_lite"/>
   <project name="multimedia_camera_lite" path="foundation/multimedia/camera_lite"/>
   <project name="multimedia_media_lite" path="foundation/multimedia/media_lite"/>