[BUG] User led Rust example doesn't compile

### Description / Steps to reproduce the issue

To reproduce the issue:
1. Configure for the `nucleo-l452re` config: ./tools/configure.sh -E -l nucleo-l452re:nsh
2. In the `make menuconfig` enable the `USERLED` option for `LED Driver`
3. In the `make menuconfig` enable the `EXAMPLES_LEDS_RUST` option, and leave everything as default
4. Compile with `make -j`

And you should have this error message:

```bash
arm-none-eabi-ld: /home/ludovic/Code/nuttx_ws/nuttx/staging/libapps.a(leds_rust_main.rs.home.ludovic.Code.nuttx_ws.apps.examples.leds_rust_1.o): in function `leds_rust_main::nuttx::safe_puts':
/home/ludovic/Code/nuttx_ws/apps/examples/leds_rust/nuttx.rs:108: undefined reference to `__aeabi_memclr'
arm-none-eabi-ld: /home/ludovic/Code/nuttx_ws/apps/examples/leds_rust/nuttx.rs:108: undefined reference to `__aeabi_memclr'
arm-none-eabi-ld: /home/ludovic/Code/nuttx_ws/nuttx/staging/libapps.a(leds_rust_main.rs.home.ludovic.Code.nuttx_ws.apps.examples.leds_rust_1.o): in function `leds_rust_main::nuttx::safe_open':
/home/ludovic/Code/nuttx_ws/apps/examples/leds_rust/nuttx.rs:77: undefined reference to `__aeabi_memclr'
arm-none-eabi-ld: /home/ludovic/Code/nuttx_ws/nuttx/staging/libapps.a(leds_rust_main.rs.home.ludovic.Code.nuttx_ws.apps.examples.leds_rust_1.o): in function `leds_rust_main::nuttx::safe_puts':
/home/ludovic/Code/nuttx_ws/apps/examples/leds_rust/nuttx.rs:108: undefined reference to `__aeabi_memclr'
arm-none-eabi-ld: /home/ludovic/Code/nuttx_ws/apps/examples/leds_rust/nuttx.rs:108: undefined reference to `__aeabi_memclr4'
arm-none-eabi-ld: /home/ludovic/Code/nuttx_ws/apps/examples/leds_rust/nuttx.rs:108: undefined reference to `__aeabi_memclr'
make[1]: *** [Makefile:212: nuttx] Error 1
make: *** [tools/Unix.mk:551: nuttx] Error 2
```

### On which OS does this issue occur?

[OS: Linux]

### What is the version of your OS?

Ubuntu 22.04 LTS

### NuttX Version

master - e2a21337ac5be663a8e6d9a82baa64b93cc19755 and stable 12.7

### Issue Architecture

[Arch: arm]

### Issue Area

[Area: Examples]

### Verification

- [X] I have verified before submitting the report.