updated readme

Signed-off-by: Nwusongqing <wusongqing@huawei.com>

en/device-dev/subsystems/Readme-EN.md

@@ -4,6 +4,7 @@
   - [Building Guidelines for Mini and Small Systems](subsys-build-mini-lite.md)
   - [Building Guidelines for Standard Systems](subsys-build-standard-large.md)
   - [Build System Coding Specifications and Best Practices](subsys-build-gn-coding-style-and-best-practice.md)
+  - [Building the Kconfig Visual Configuration](subsys-build-gn-kconfig-visual-config-guid.md)
 - [Distributed Remote Startup](subsys-remote-start.md)
 - [Graphics](subsys-graphics.md)
   - [Graphics](subsys-graphics-overview.md)