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/libraries/opencollada/default.nix

@@ -0,0 +1,35 @@
+{ lib, stdenv, fetchFromGitHub, cmake, pkg-config, libxml2, pcre
+, darwin}:
+
+stdenv.mkDerivation rec {
+  pname = "opencollada";
+
+  version = "1.6.68";
+
+  src = fetchFromGitHub {
+    owner = "KhronosGroup";
+    repo = "OpenCOLLADA";
+    rev = "v${version}";
+    sha256 = "1ym16fxx9qhf952vva71sdzgbm7ifis0h1n5fj1bfdj8zvvkbw5w";
+  };
+
+  nativeBuildInputs = [ cmake pkg-config ];
+  buildInputs = lib.optionals stdenv.isDarwin (with darwin.apple_sdk.frameworks; [ AGL ]);
+
+  propagatedBuildInputs = [ libxml2 pcre ];
+
+  patchPhase = ''
+    patch -p1 < ${./pcre.patch}
+  '' + lib.optionalString stdenv.isDarwin ''
+    substituteInPlace GeneratedSaxParser/src/GeneratedSaxParserUtils.cpp \
+      --replace math.h cmath
+  '';
+
+  meta = {
+    description = "A library for handling the COLLADA file format";
+    homepage = "https://github.com/KhronosGroup/OpenCOLLADA/";
+    maintainers = [ lib.maintainers.eelco ];
+    platforms = lib.platforms.unix;
+    license = lib.licenses.mit;
+  };
+}

pkgs/development/libraries/opencollada/pcre.patch

@@ -0,0 +1,14 @@
+diff --git a/COLLADABaseUtils/include/COLLADABUPcreCompiledPattern.h b/COLLADABaseUtils/include/COLLADABUPcreCompiledPattern.h
+index 22f2598b..269c50ca 100644
+--- a/COLLADABaseUtils/include/COLLADABUPcreCompiledPattern.h
++++ b/COLLADABaseUtils/include/COLLADABUPcreCompiledPattern.h
+@@ -13,8 +13,7 @@
+ 
+ #include "COLLADABUPrerequisites.h"
+ 
+-struct real_pcre;
+-typedef struct real_pcre pcre;
++#include "pcre.h"
+ 
+ 
+ namespace COLLADABU