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/compilers/as31/default.nix

@@ -0,0 +1,43 @@
+{ lib
+, stdenv
+, fetchurl
+, bison
+}:
+
+stdenv.mkDerivation rec {
+  pname = "as31";
+  version = "2.3.1";
+
+  src = fetchurl {
+    url = "http://wiki.erazor-zone.de/_media/wiki:projects:linux:as31:${pname}-${version}.tar.gz";
+    name = "${pname}-${version}.tar.gz";
+    hash = "sha256-zSEyWHFon5nyq717Mpmdv1XZ5Hz0e8ZABqsP8M83c1U=";
+  };
+
+  patches = [
+    # Check return value of getline in run.c
+    ./0000-getline-break.patch
+  ];
+
+  postPatch = ''
+    # parser.c is generated from parser.y; it is better to generate it via bison
+    # instead of using the prebuilt one, especially in x86_64
+    rm -f as31/parser.c
+  '';
+
+  preConfigure = ''
+    chmod +x configure
+  '';
+
+  nativeBuildInputs = [
+    bison
+  ];
+
+  meta = with lib; {
+    homepage = "http://wiki.erazor-zone.de/wiki:projects:linux:as31";
+    description = "An 8031/8051 assembler";
+    license = licenses.gpl2Plus;
+    maintainers = with maintainers; [ AndersonTorres ];
+    platforms = platforms.unix;
+  };
+}