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/mobile/webos/cmake-modules.nix

@@ -0,0 +1,32 @@
+{ lib, stdenv, fetchFromGitHub, cmake }:
+
+stdenv.mkDerivation rec {
+  pname = "cmake-modules-webos";
+  version = "19";
+
+  src = fetchFromGitHub {
+    owner = "openwebos";
+    repo = "cmake-modules-webos";
+    rev = "submissions/${version}";
+    sha256 = "1l4hpcmgc98kp9g1642sy111ki5qyk3q7j10xzkgmnvz8lqffnxp";
+  };
+
+  nativeBuildInputs = [ cmake ];
+
+  prePatch = ''
+    substituteInPlace CMakeLists.txt --replace "CMAKE_ROOT}/Modules" "CMAKE_INSTALL_PREFIX}/lib/cmake"
+    substituteInPlace webOS/webOS.cmake \
+      --replace ' ''${CMAKE_ROOT}/Modules' " $out/lib/cmake" \
+      --replace 'INSTALL_ROOT}/usr' 'INSTALL_ROOT}'
+
+    sed -i '/CMAKE_INSTALL_PREFIX/d' webOS/webOS.cmake
+  '';
+
+  setupHook = ./cmake-setup-hook.sh;
+
+  meta = with lib; {
+    description = "CMake modules needed to build Open WebOS components";
+    license = licenses.asl20;
+    maintainers = with maintainers; [ dtzWill ];
+  };
+}