Add NXP i.MX8 SOC family support.

Currently there are two devices supported:
* imx8qm-mek
* imx8qxp-mek

Signed-off-by: Ivan Nikolaenko <ivan.nikolaenko@unikie.com>

nxp/common/bsp/imx-mkimage.nix

@@ -0,0 +1,31 @@
+{ pkgs }:
+
+with pkgs;
+pkgs.stdenv.mkDerivation rec {
+  pname = "imx-mkimage";
+  version = "lf-5.15.32-2.0.0";
+
+  src = fetchgit {
+    url = "https://source.codeaurora.org/external/imx/imx-mkimage.git";
+    rev = version;
+    sha256 = "sha256-31pib5DTDPVfiAAoOSzK8HWUlnuiNnfXQIsxbjneMCc=";
+    leaveDotGit = true;
+  };
+
+  nativeBuildInputs = [
+    git
+  ];
+
+  buildInputs = [
+    git
+    glibc.static
+  ];
+
+  makeFlags = [
+    "bin"
+  ];
+
+  installPhase = ''
+    install -m 0755 mkimage_imx8 $out
+  '';
+}