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/dotnet/dotnetbuildhelpers/remove-duplicated-dlls.sh

@@ -0,0 +1,22 @@
+#!/usr/bin/env bash
+
+IFS="
+"
+
+for dll in $(find -iname \*.dll)
+do
+    baseName="$(basename "$dll" | sed "s/.dll$//i")"
+    if pkg-config "$baseName"
+    then
+        candidateDll="$(pkg-config "$baseName" --variable=Libraries)"
+
+        if diff "$dll" "$candidateDll" >/dev/null
+        then
+            echo "$dll is identical to $candidateDll. Substituting..."
+            rm -vf "$dll"
+            ln -sv "$candidateDll" "$dll"
+        else
+            echo "$dll and $candidateDll share the same name but have different contents, leaving alone."
+        fi
+    fi
+done