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/parsing/ragel/default.nix

@@ -0,0 +1,52 @@
+{ lib, stdenv, fetchurl, fig2dev, tex, ghostscript, colm
+, build-manual ? false
+}:
+
+let
+  generic = { version, sha256, license }:
+    stdenv.mkDerivation rec {
+      pname = "ragel";
+      inherit version;
+
+      src = fetchurl {
+        url = "https://www.colm.net/files/ragel/${pname}-${version}.tar.gz";
+        inherit sha256;
+      };
+
+      buildInputs = lib.optional build-manual [ fig2dev ghostscript tex ];
+
+      preConfigure = lib.optionalString build-manual ''
+        sed -i "s/build_manual=no/build_manual=yes/g" DIST
+      '';
+
+      configureFlags = [ "--with-colm=${colm}" ];
+
+      NIX_CFLAGS_COMPILE = lib.optionalString stdenv.cc.isGNU "-std=gnu++98";
+
+      doCheck = true;
+
+      meta = with lib; {
+        broken = stdenv.isDarwin;
+        homepage = "https://www.colm.net/open-source/ragel/";
+        description = "State machine compiler";
+        inherit license;
+        platforms = platforms.unix;
+        maintainers = with maintainers; [ pSub ];
+      };
+    };
+
+in
+
+{
+  ragelStable = generic {
+    version = "6.10";
+    sha256 = "0gvcsl62gh6sg73nwaxav4a5ja23zcnyxncdcdnqa2yjcpdnw5az";
+    license = lib.licenses.gpl2;
+  };
+
+  ragelDev = generic {
+    version = "7.0.0.12";
+    sha256 = "0x3si355lv6q051lgpg8bpclpiq5brpri5lv3p8kk2qhzfbyz69r";
+    license = lib.licenses.mit;
+  };
+}