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/python/hooks/python-catch-conflicts-hook.sh

@@ -0,0 +1,10 @@
+# Setup hook for detecting conflicts in Python packages
+echo "Sourcing python-catch-conflicts-hook.sh"
+
+pythonCatchConflictsPhase() {
+    @pythonInterpreter@ @catchConflicts@
+}
+
+if [ -z "${dontUsePythonCatchConflicts-}" ]; then
+    preDistPhases+=" pythonCatchConflictsPhase"
+fi