Mark the test as unsupported on darwin, NFC.

The bundler may fail on darwin, mark the test as not compatible.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@369044 91177308-0d34-0410-b5e6-96231b3b80d8

test/Driver/clang-offload-bundler.c

@@ -1,7 +1,7 @@
 // REQUIRES: x86-registered-target
 // REQUIRES: powerpc-registered-target
 // REQUIRES: shell
-// UNSUPPORTED: ms-sdk
+// UNSUPPORTED: ms-sdk, darwin
 
 //
 // Generate all the types of files we can bundle.