linux-yocto/6.6: cfg: riscv XHCI

linux-yocto/6.6: cfg: riscv XHCI

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

1/1 [
    Author: Khem Raj
    Email: raj.khem@gmail.com
    Subject: riscv: Enable XHCI usb
    Date: Thu, 7 Mar 2024 08:04:18 -0800

    This brings it closer to other qemu configs in yocto and help to use usb
    mouse and keyboard device emulation

    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>