* [DFS] prepare for dfs_v2. dfs_fd -> dfs_file; dfs_fnode -> dfs_vnode.

* [BSP] fix code analysis warning

* [smart] fix the pointer overflow.

* code format

* [smart] fix the lwp->lwp_obj checking.

* [DFS] add Kconfig for dfs-v2.0

* [DFS] Optimize the SConscript.

* [dfs] move old dfs to dfs/dfs_v1

🐞 fix(components/dfs/filesystems/tmpfs/dfs_tmpfs.c): cannot open the same file repeatedly in 'w' mode

* [dfs] sync cromfs

* [rt-smart]Weaken RT_USING_LWP, use RT_USING_SMART as macro configuration

* [format] fix some format issue.

* Synchronize the code of the rt mart branch to the master branch.
  * TTY device
  * Add lwP code from rt-smart
  * Add vnode in DFS, but DFS will be re-write for rt-smart
  * There are three libcpu for rt-smart:
    * arm/cortex-a, arm/aarch64
    * riscv64
Co-authored-by: NRbb666 <zhangbingru@rt-thread.com>
Co-authored-by: Nzhkag <zhkag@foxmail.com>