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/tools/build-managers/jam/default.nix

@@ -0,0 +1,45 @@
+{ lib, stdenv, fetchurl, bison }:
+
+stdenv.mkDerivation rec {
+  pname = "jam";
+  version = "2.6.1";
+
+  src = fetchurl {
+    url = "https://swarm.workshop.perforce.com/projects/perforce_software-jam/download/main/${pname}-${version}.tar";
+    sha256 = "19xkvkpycxfsncxvin6yqrql3x3z9ypc1j8kzls5k659q4kv5rmc";
+  };
+
+  nativeBuildInputs = [ bison ];
+
+  preConfigure = ''
+    unset AR
+  '';
+
+  buildPhase = ''
+    runHook preBuild
+
+    make jam0
+
+    runHook postBuild
+  '';
+
+  installPhase = ''
+    runHook preInstall
+
+    ./jam0 -j$NIX_BUILD_CORES -sBINDIR=$out/bin install
+    mkdir -p $out/doc/jam
+    cp *.html $out/doc/jam
+
+    runHook postInstall
+  '';
+
+  enableParallelBuilding = true;
+
+  meta = with lib; {
+    homepage = "https://www.perforce.com/resources/documentation/jam";
+    license = licenses.free;
+    description = "Just Another Make";
+    maintainers = with maintainers; [ orivej ];
+    platforms = platforms.unix;
+  };
+}