rust: alloc: vec: Add some try_* methods we need

Add some missing fallible methods that we need.

They are all marked as:

    #[stable(feature = "kernel", since = "1.0.0")]

for easy identification.

Lina: Extracted from commit 487d7578bd03 ("rust: alloc: add some `try_*`
methods we need") in rust-for-linux/rust.

Signed-off-by: Miguel Ojeda <[email protected]>
Signed-off-by: Asahi Lina <[email protected]>
Link: https://github.com/Rust-for-Linux/linux/commit/487d7578bd03
Link: https://lore.kernel.org/r/[email protected]
[ Match the non-fallible methods from version 1.62.0, since those
  in commit 487d7578bd03 were written for 1.54.0-beta.1. ]
Signed-off-by: Miguel Ojeda <[email protected]>

0 files changed, 0 insertions, 0 deletions