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/misc/kermit/default.nix

@@ -0,0 +1,40 @@
+{ lib, stdenv, fetchurl, ncurses, glibc }:
+
+stdenv.mkDerivation {
+  pname = "kermit";
+  version = "9.0.302";
+
+  src = fetchurl {
+    url = "ftp://ftp.kermitproject.org/kermit/archives/cku302.tar.gz";
+    sha256 = "0487mh6s99ijqf1pfmbm302pa5i4pzmm8s439hdl1ffs5g8jqpqd";
+  };
+
+  buildInputs = [ ncurses glibc ];
+
+  unpackPhase = ''
+    mkdir -p src
+    pushd src
+    tar xvzf $src
+  '';
+
+  postPatch = ''
+    sed -i -e 's@-I/usr/include/ncurses@@' \
+      -e 's@/usr/local@'"$out"@ makefile
+  '';
+
+  buildPhase = "make -f makefile linux KFLAGS='-D_IO_file_flags' LNKFLAGS='-lcrypt -lresolv'";
+
+  installPhase = ''
+    mkdir -p $out/bin
+    mkdir -p $out/man/man1
+    make -f makefile install
+  '';
+
+  meta = with lib; {
+    homepage = "https://www.kermitproject.org/ck90.html";
+    description = "Portable Scriptable Network and Serial Communication Software";
+    license = licenses.bsd3;
+    maintainers = with maintainers; [ pSub ];
+    platforms = with platforms; linux;
+  };
+}