test/Driver/linker-opts.c: Mark as XFAIL:cygming, using gcc linker driver. It should be aware of LIBRARY_PATH.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@152896 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Driver/linker-opts.c b/test/Driver/linker-opts.c
index 253ca7b..d036dfd 100644
--- a/test/Driver/linker-opts.c
+++ b/test/Driver/linker-opts.c
@@ -1,2 +1,5 @@
 // RUN: env LIBRARY_PATH=%T/test1 %clang -x c %s -### 2>&1 | FileCheck %s
 // CHECK: "-L" "{{.*}}/test1"
+
+// GCC driver is used as linker on cygming. It should be aware of LIBRARY_PATH.
+// XFAIL: cygwin,mingw32