[net] adjust folder structure (#5587)

* [net] adjust folder structure
- 将lwip相关的文件夹，移入lwip文件夹
- Kconfig 分散到at netdev lwip sal文件夹中，使用menuconfig代替menu

3 files changed, 0 insertions, 52 deletions

diff --git a/components/net/sal_socket/include/socket/netinet/in.h b/components/net/sal_socket/include/socket/netinet/in.h
deleted file mode 100644
index 37240547b4..0000000000
--- a/components/net/sal_socket/include/socket/netinet/in.h
+++ /dev/null
@@ -1,20 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- * 2015-02-17     Bernard      First version
- */
-
-#ifndef IN_H__
-#define IN_H__
-
-#include <sys/socket.h>
-
-#ifndef IN6_IS_ADDR_MULTICAST
-#define IN6_IS_ADDR_MULTICAST(a) (((uint8_t *) (a))[0] == 0xff)
-#endif
-
-#endif
diff --git a/components/net/sal_socket/include/socket/netinet/tcp.h b/components/net/sal_socket/include/socket/netinet/tcp.h
deleted file mode 100644
index a3b530186a..0000000000
--- a/components/net/sal_socket/include/socket/netinet/tcp.h
+++ /dev/null
@@ -1,16 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- * 2015-02-17     Bernard      First version
- */
-
-#ifndef TCP_H__
-#define TCP_H__
-
-#include <sys/socket.h>
-
-#endif
diff --git a/components/net/sal_socket/include/socket/netinet/udp.h b/components/net/sal_socket/include/socket/netinet/udp.h
deleted file mode 100644
index 21f50d55e5..0000000000
--- a/components/net/sal_socket/include/socket/netinet/udp.h
+++ /dev/null
@@ -1,16 +0,0 @@
-/*
- * Copyright (c) 2006-2021, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date           Author       Notes
- * 2015-02-17     Bernard      First version
- */
-
-#ifndef UDP_H__
-#define UDP_H__
-
-#include <sys/socket.h>
-
-#endif