[jfern:nova/mm 5/30] warning: associated items `from_raw`, `next`, and `new` are never used

[kernel test robot <lkp@intel.com>]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/jfern/linux.git nova/mm
head:   b94c5d9b67e466e13a0e7ab9ac11c4bbc1cac1a9
commit: 39d0c149fcf8f63632522435df53e3648999d824 [5/30] rust: clist: Add support to interface with C linked lists
config: x86_64-buildonly-randconfig-004-20260125 (https://download.01.org/0day-ci/archive/20260125/202601250810.q4eMSFkF-lkp@intel.com/config)
compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261)
rustc: rustc 1.88.0 (6b00bc388 2025-06-23)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260125/202601250810.q4eMSFkF-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202601250810.q4eMSFkF-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> warning: associated items `from_raw`, `next`, and `new` are never used
   --> rust/kernel/clist.rs:113:26
   |
   105 | impl CListHead {
   | -------------- associated items in this implementation
   ...
   113 |     pub(crate) unsafe fn from_raw<'a>(ptr: *mut bindings::list_head) -> &'a Self {
   |                          ^^^^^^^^
   ...
   128 |     pub(crate) fn next(&self) -> &Self {
   |                   ^^^^
   ...
   145 |     pub(crate) fn new() -> impl PinInit<Self> {
   |                   ^^^
   |
   = note: `#[warn(dead_code)]` on by default
--
>> warning: struct `CListHeadIter` is never constructed
   --> rust/kernel/clist.rs:179:8
   |
   179 | struct CListHeadIter<'a> {
   |        ^^^^^^^^^^^^^
--
>> warning: associated items `from_raw` and `iter` are never used
   --> rust/kernel/clist.rs:231:26
   |
   220 | impl<T, const OFFSET: usize> CList<T, OFFSET> {
   | --------------------------------------------- associated items in this implementation
   ...
   231 |     pub(crate) unsafe fn from_raw<'a>(ptr: *mut bindings::list_head) -> &'a Self {
   |                          ^^^^^^^^
   ...
   247 |     pub(crate) fn iter(&self) -> CListIter<'_, T, OFFSET> {
   |                   ^^^^
--
>> warning: struct `CListIter` is never constructed
   --> rust/kernel/clist.rs:260:19
   |
   260 | pub(crate) struct CListIter<'a, T, const OFFSET: usize> {
   |                   ^^^^^^^^^

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