Merge tag 'alloc-7.2-rc1' of https://github.com/Rust-for-Linux/linux into rust-next

Pull alloc updates from Danilo Krummrich:

 - Fix the 'Vec::reserve()' doctest to properly account for the existing
   vector length in the capacity assertion.

 - Fix an incorrect operator in the 'Vec::extend_with()' SAFETY comment;
   add a doc test demonstrating basic usage and the zero-length case.

 - Cleanup all imports in the alloc module and its doctests to use the
   "kernel vertical" import style.

* tag 'alloc-7.2-rc1' of https://github.com/Rust-for-Linux/linux:
  rust: alloc: cleanup doctest imports to "kernel vertical" style
  rust: alloc: cleanup imports and use "kernel vertical" style
  rust: alloc: fix `Vec::extend_with` SAFETY comment
  rust: alloc: add doc test for `Vec::extend_with`
  rust: alloc: fix assert in `Vec::reserve` doc test