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/development/interpreters/asmrepl/gemset.nix

@@ -0,0 +1,23 @@
+{
+  asmrepl = {
+    dependencies = ["fisk"];
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "10d0zvkhk3ja48vvx28hfsqfrzfl66vdpmk3gcgb5viy174c72v6";
+      type = "gem";
+    };
+    version = "1.0.3";
+  };
+  fisk = {
+    groups = ["default"];
+    platforms = [];
+    source = {
+      remotes = ["https://rubygems.org"];
+      sha256 = "1mq2a7hjs9xfg514ci0xw90c33rzq1y58ywpnmhp7w767ll6wldd";
+      type = "gem";
+    };
+    version = "2.3.0";
+  };
+}