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/misc/or1k/newlib.nix

@@ -0,0 +1,36 @@
+{ stdenv, texinfo, flex, bison, fetchFromGitHub, crossLibcStdenv, buildPackages }:
+
+crossLibcStdenv.mkDerivation {
+  name = "newlib";
+  src = fetchFromGitHub {
+    owner = "openrisc";
+    repo = "newlib";
+    rev = "8ac94ca7bbe4ceddafe6583ee4766d3c15b18ac8";
+    sha256 = "0hzhijmry5slpp6x12pgng8v7jil3mn18ahrhnw431lqrs1cma0s";
+  };
+
+  depsBuildBuild = [ buildPackages.stdenv.cc ];
+
+  # newlib expects CC to build for build platform, not host platform
+  preConfigure = ''
+    export CC=cc
+  '';
+
+  configurePlatforms = [ "build" "target" ];
+  configureFlags = [
+    "--host=${stdenv.buildPlatform.config}"
+
+    "--disable-newlib-supplied-syscalls"
+    "--disable-nls"
+    "--enable-newlib-io-long-long"
+    "--enable-newlib-register-fini"
+    "--enable-newlib-retargetable-locking"
+  ];
+
+  dontDisableStatic = true;
+
+  passthru = {
+    incdir = "/${stdenv.targetPlatform.config}/include";
+    libdir = "/${stdenv.targetPlatform.config}/lib";
+  };
+}