Microchip Icicle-kit board support

1. Supported devices

• Microchip Icicle Kit (mpfs-icicle-kit) - device-specific U-boot and Linux kernel, nixos configuration example.

2. How to use?

Currently this overlay is used for generating bootable NixOS SD images.

Code snippet example that enables icicle-kit configuration:

{ nixos-hardware, }: {
  system = "riscv64-linux";
  modules = [
    nixos-hardware.nixosModules.icicle-kit
  ];
}