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/tools/compression/upx/default.nix

@@ -0,0 +1,36 @@
+{ lib, stdenv, fetchurl, ucl, zlib, perl }:
+
+stdenv.mkDerivation rec {
+  pname = "upx";
+  version = "3.96";
+  src = fetchurl {
+    url = "https://github.com/upx/upx/releases/download/v${version}/${pname}-${version}-src.tar.xz";
+    sha256 = "051pk5jk8fcfg5mpgzj43z5p4cn7jy5jbyshyn78dwjqr7slsxs7";
+  };
+
+  buildInputs = [ ucl zlib perl ];
+
+  preConfigure = ''
+    export UPX_UCLDIR=${ucl}
+  '';
+
+  makeFlags = [
+    "-C" "src"
+    "CHECK_WHITESPACE=true"
+
+    # Disable blanket -Werror. Triggers failues on minor gcc-11 warnings.
+    "CXXFLAGS_WERROR="
+  ];
+
+  installPhase = ''
+    mkdir -p $out/bin
+    cp src/upx.out $out/bin/upx
+  '';
+
+  meta = with lib; {
+    homepage = "https://upx.github.io/";
+    description = "The Ultimate Packer for eXecutables";
+    license = licenses.gpl2Plus;
+    platforms = platforms.unix;
+  };
+}