Description:vfs refactoring

Feature or Bugfix:Feature
Binary Source:Huawei
PrivateCode(Yes/No):Yes

Change-Id: I175d2648bc6f9078c34de2c0a5c93fda10b86c47
ChangeID:13306324

gen_rootfs.py

@@ -418,6 +418,8 @@ def main():
         'config': ['etc', [], ""],
         'system/internal': ['system/internal', [], ""],
         'etc': ['etc', [], ""],
+        'proc': ['proc', [], ""],
+        'dev': ['dev', [], ""],
         'data': ['data', [], ""],
         'obj/foundation/distributedschedule/samgr_lite/config': ['etc', [], ""]
     }