linux-yocto/6.18: rust kernel configs

linux-yocto/6.18: rust kernel configs

Integrating the following commit(s) to linux-yocto/.:

1/3 [
    Author: Harish Sadineni
    Email: Harish.Sadineni@windriver.com
    Subject: features/kernel-rust: Add feature to enable Rust kernel support
    Date: Thu, 11 Dec 2025 04:42:31 -0800

    Add a new kernel feature that enables Rust support in the kernel. This
    introduces kernel-rust.cfg to set Rust-related Kconfig options and
    kernel-rust.scc to define the feature metadata.

    The feature enables:
      - CONFIG_RUST
      - CONFIG_RUST_OVERFLOW_CHECKS
      - CONFIG_RUST_BUILD_ASSERT_ALLOW

    Signed-off-by: Harish Sadineni <Harish.Sadineni@windriver.com>
    Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>
]

2/3 [
    Author: Harish Sadineni
    Email: Harish.Sadineni@windriver.com
    Subject: kernel-sample: Add Rust sample configuration files
    Date: Thu, 11 Dec 2025 04:42:32 -0800

    Extend the existing kernel-sample feature by adding support for the Rust
    sample modules provided by the kernel. This adds a new kernel-rust-sample.cfg
    and corresponding .scc entry alongside the existing kernel-samples.cfg.

    The new configuration enables:
      - CONFIG_SAMPLES_RUST
      - CONFIG_SAMPLE_RUST_MINIMAL
      - CONFIG_SAMPLE_RUST_PRINT
      - CONFIG_SAMPLE_RUST_HOSTPROGS

    Signed-off-by: Harish Sadineni <Harish.Sadineni@windriver.com>
    Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>
]

3/3 [
    Author: Harish Sadineni
    Email: Harish.Sadineni@windriver.com
    Subject: debug: Add kernel Rust debug feature
    Date: Thu, 11 Dec 2025 04:42:33 -0800

    Add a new debug feature to enable Rust-related kernel debugging support.
    This introduces debug-kernel-rust.scc along with its associated Kconfig
    file debug-kernel-rust.cfg.

    Signed-off-by: Harish Sadineni <Harish.Sadineni@windriver.com>
    Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>
]

Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>