linux-yocto/6.12: riscv config sync

linux-yocto/6.12: riscv config sync

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

1/1 [
    Author: Khem Raj
    Email: raj.khem@gmail.com
    Subject: bsp/qemuriscv32: Sync config with upstream defconfig 6.12+
    Date: Tue, 20 May 2025 09:36:06 -0700

    Signed-off-by: Khem Raj <raj.khem@gmail.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>