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/node/fetch-yarn-deps/tests/default.nix

@@ -0,0 +1,16 @@
+{ testers, fetchYarnDeps, ... }:
+
+{
+  simple = testers.invalidateFetcherByDrvHash fetchYarnDeps {
+    yarnLock = ./simple.lock;
+    sha256 = "sha256-Erdkw2E8wWT09jFNLXGkrdwKl0HuSZWnUDJUrV95vSE=";
+  };
+  gitDep = testers.invalidateFetcherByDrvHash fetchYarnDeps {
+    yarnLock = ./git.lock;
+    sha256 = "sha256-lAqN4LpoE+jgsQO1nDtuORwcVEO7ogEV53jCu2jFJUI=";
+  };
+  githubDep = testers.invalidateFetcherByDrvHash fetchYarnDeps {
+    yarnLock = ./github.lock;
+    sha256 = "sha256-Tsfgyjxz8x6gNmfN0xR7G/NQNoEs4svxRN/N+26vfJU=";
+  };
+}