trustzone: add rust 1.99.0 ported std and libc for std TAs

[ivila]

This PR adds the OP-TEE adaptation patches for Rust 1.99.0 and libc 0.2.189, enabling Rust standard library support for OP-TEE Trusted Applications.

Compared with the previous port:

• library/std/src/thread/lifecycle.rs no longer needs to be patched. The AArch64 OP-TEE target specification has been fixed to set singlethread: true, allowing the standard library to
  select its single-threaded implementation. As a result, the multi-threaded lifecycle code is not compiled for this target.
• The C function declarations in libc/src/optee/mod.rs have been reordered to follow the order of the corresponding OP-TEE header files. This is an organizational change and does not
  alter their signatures or behavior.
• library/std/src/sys/alloc/optee.rs has been adapted to the latest Rust standard library allocator interface. Instead of implementing GlobalAlloc for System, the OP-TEE backend now
  provides the allocator functions expected by sys::alloc and uses realloc_fallback when the requested alignment cannot be handled directly by libc::realloc.