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/graphics/ldgallery/compiler/generate.sh

@@ -0,0 +1,19 @@
+#!/usr/bin/env nix-shell
+#!nix-shell -i bash -p cabal2nix
+
+set -euo pipefail
+
+if [ "$#" -ne 1 ] || [[ "$1" == -* ]]; then
+  echo "Regenerates the nix file for the ldgallery-compiler package."
+  echo "Usage: $0 <git release tag>"
+  exit 1
+fi
+
+echo "# generated with cabal2nix by ./generate.sh" > default.nix
+
+cabal2nix \
+  --maintainer pacien \
+  --subpath compiler \
+  --revision $1 \
+  "https://github.com/pacien/ldgallery.git" \
+  >> default.nix