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/tools/xcbuild/setup-hook.sh

@@ -0,0 +1,29 @@
+xcbuildBuildPhase() {
+    export DSTROOT=$out
+
+    runHook preBuild
+
+    echo "running xcodebuild"
+
+    xcodebuild SYMROOT=$PWD/Products OBJROOT=$PWD/Intermediates $xcbuildFlags build
+
+    runHook postBuild
+}
+
+xcbuildInstallPhase () {
+    runHook preInstall
+
+    # not implemented
+    # xcodebuild install
+
+    runHook postInstall
+}
+
+buildPhase=xcbuildBuildPhase
+if [ -z "${installPhase-}" ]; then
+    installPhase=xcbuildInstallPhase
+fi
+
+# if [ -d "*.xcodeproj" ]; then
+#     buildPhase=xcbuildPhase
+# fi