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>

nixos/tests/geth.nix

@@ -0,0 +1,41 @@
+import ./make-test-python.nix ({ pkgs, ... }: {
+  name = "geth";
+  meta = with pkgs.lib; {
+    maintainers = with maintainers; [bachp ];
+  };
+
+  nodes.machine = { ... }: {
+    services.geth."mainnet" = {
+      enable = true;
+      http = {
+        enable = true;
+      };
+    };
+    services.geth."testnet" = {
+      enable = true;
+      port = 30304;
+      network = "goerli";
+      http = {
+        enable = true;
+        port = 18545;
+      };
+    };
+  };
+
+  testScript = ''
+    start_all()
+
+    machine.wait_for_unit("geth-mainnet.service")
+    machine.wait_for_unit("geth-testnet.service")
+    machine.wait_for_open_port(8545)
+    machine.wait_for_open_port(18545)
+
+    machine.succeed(
+        'geth attach --exec eth.blockNumber http://localhost:8545 | grep \'^0$\' '
+    )
+
+    machine.succeed(
+        'geth attach --exec "eth.chainId()" http://localhost:18545 | grep \'"0x5"\' '
+    )
+  '';
+})