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/os-specific/darwin/apple-source-releases/bootstrap_cmds/default.nix

@@ -0,0 +1,43 @@
+{ lib, appleDerivation, stdenv, bison, flex }:
+
+let
+
+  # Hard to get CC to pull this off without infinite recursion
+  targetTargetPrefix = lib.optionalString
+    (with stdenv; hostPlatform != targetPlatform)
+    (stdenv.targetPlatform.config + "-");
+
+in
+
+appleDerivation {
+  nativeBuildInputs = [ bison flex ];
+
+  buildPhase = ''
+    cd migcom.tproj
+
+    # redundant file, don't know why apple not removing it.
+    rm handler.c
+
+    yacc -d parser.y
+    flex --header-file=lexxer.yy.h -o lexxer.yy.c lexxer.l
+
+    $CC -std=gnu99 -Os -dead_strip -DMIG_VERSION=\"$pname-$version\" -I. -o migcom *.c
+  '';
+
+  installPhase = ''
+    mkdir -p $out/bin $out/libexec $out/share/man/man1
+
+    chmod +x mig.sh
+    cp mig.sh   $out/bin/mig
+    cp migcom   $out/libexec
+    ln -s $out/libexec/migcom $out/bin/migcom
+    cp mig.1    $out/share/man/man1
+    cp migcom.1 $out/share/man/man1
+
+    substituteInPlace $out/bin/mig \
+      --replace 'arch=`/usr/bin/arch`' 'arch=${stdenv.targetPlatform.darwinArch}' \
+      --replace '/usr/bin/' "" \
+      --replace '/bin/rmdir' "rmdir" \
+      --replace 'C=''${MIGCC}' "C=${targetTargetPrefix}cc"
+  '';
+}