uboot: (firmwareOdroidC2/C4) don't invoke patch tool, use patches = [] instead

https://github.com/NixOS/nixpkgs/blob/master/pkgs/stdenv/generic/setup.sh#L948
this can do it nicely.

Signed-off-by: Anton Arapov <anton@deadbeef.mx>

pkgs/development/libraries/marl/default.nix

@@ -0,0 +1,26 @@
+{ lib, stdenv, cmake, fetchFromGitHub }:
+
+stdenv.mkDerivation rec {
+  pname = "marl";
+  version = "1.0.0";  # Based on marl's CHANGES.md
+
+  src = fetchFromGitHub {
+    owner = "google";
+    repo = pname;
+    sha256 = "0pnbarbyv82h05ckays2m3vgxzdhpcpg59bnzsddlb5v7rqhw51w";
+    rev = "40209e952f5c1f3bc883d2b7f53b274bd454ca53";
+  };
+
+  nativeBuildInputs = [ cmake ];
+
+  # Turn on the flag to install after building the library.
+  cmakeFlags = ["-DMARL_INSTALL=ON"];
+
+  meta = with lib; {
+    homepage = "https://github.com/google/marl";
+    description = "A hybrid thread / fiber task scheduler written in C++ 11";
+    platforms = platforms.all;
+    license = licenses.asl20;
+    maintainers = with maintainers; [ breakds ];
+  };
+}