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/tools/security/afl/libdislocator.nix

@@ -0,0 +1,34 @@
+{ lib, stdenv, afl}:
+
+stdenv.mkDerivation {
+  version = lib.getVersion afl;
+  pname = "libdislocator";
+
+  src = afl.src;
+  sourceRoot = "${afl.src.name}/libdislocator";
+
+  makeFlags = [ "PREFIX=$(out)" ];
+
+  preInstall = ''
+    mkdir -p $out/lib/afl
+  '';
+  postInstall = ''
+    mkdir $out/bin
+    cat > $out/bin/get-libdislocator-so <<END
+    #!${stdenv.shell}
+    echo $out/lib/afl/libdislocator.so
+    END
+    chmod +x $out/bin/get-libdislocator-so
+  '';
+
+  meta = with lib; {
+    homepage = "https://lcamtuf.coredump.cx/afl/";
+    description = ''
+      Drop-in replacement for the libc allocator which improves
+      the odds of bumping into heap-related security bugs in
+      several ways.
+    '';
+    license = lib.licenses.asl20;
+    maintainers = with maintainers; [ ris ];
+  };
+}