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/bctoolbox/default.nix

@@ -0,0 +1,48 @@
+{ bcunit
+, cmake
+, bc-decaf
+, fetchFromGitLab
+, mbedtls
+, lib
+, stdenv
+}:
+
+stdenv.mkDerivation rec {
+  pname = "bctoolbox";
+  version = "5.1.17";
+
+  nativeBuildInputs = [
+    cmake
+  ];
+  buildInputs = [
+    # Made by BC
+    bcunit
+
+    # Vendored by BC
+    bc-decaf
+
+    mbedtls
+  ];
+
+  src = fetchFromGitLab {
+    domain = "gitlab.linphone.org";
+    owner = "public";
+    group = "BC";
+    repo = pname;
+    rev = version;
+    sha256 = "sha256-p1rpFFMCYG/c35lqQT673j/Uicxe+PLhaktQfM6uF8Y=";
+  };
+
+  # Do not build static libraries
+  cmakeFlags = [ "-DENABLE_STATIC=NO" "-DENABLE_STRICT=NO" ];
+
+  strictDeps = true;
+
+  meta = with lib; {
+    description = "Utilities library for Linphone";
+    homepage = "https://gitlab.linphone.org/BC/public/bctoolbox";
+    license = licenses.gpl3Plus;
+    maintainers = with maintainers; [ raskin jluttine ];
+    platforms = platforms.linux;
+  };
+}