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/build-support/rust/fetch-cargo-tarball/cargo-vendor-normalise.py

@@ -0,0 +1,41 @@
+#!/usr/bin/env python
+
+import sys
+
+import toml
+
+
+def quote(s: str) -> str:
+    escaped = s.replace('"', r"\"").replace("\n", r"\n").replace("\\", "\\\\")
+    return '"{}"'.format(escaped)
+
+
+def main() -> None:
+    data = toml.load(sys.stdin)
+
+    assert list(data.keys()) == ["source"]
+
+    # this value is non deterministic
+    data["source"]["vendored-sources"]["directory"] = "@vendor@"
+
+    lines = []
+    inner = data["source"]
+    for source, attrs in sorted(inner.items()):
+        lines.append("[source.{}]".format(quote(source)))
+        if source == "vendored-sources":
+            lines.append('"directory" = "@vendor@"\n')
+        else:
+            for key, value in sorted(attrs.items()):
+                attr = "{} = {}".format(quote(key), quote(value))
+                lines.append(attr)
+        lines.append("")
+
+    result = "\n".join(lines)
+    real = toml.loads(result)
+    assert real == data, "output = {} while input = {}".format(real, data)
+
+    print(result)
+
+
+if __name__ == "__main__":
+    main()