include/llvm/Config/llvm-config.h.in: Add the entry LLVM_PATH_XDOT_PY, for consistency against llvm-config.h.cmake.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140137 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/llvm/Config/llvm-config.h.in b/include/llvm/Config/llvm-config.h.in
index f04385e..b2257f3 100644
--- a/include/llvm/Config/llvm-config.h.in
+++ b/include/llvm/Config/llvm-config.h.in
@@ -97,6 +97,9 @@
 /* Define to path to twopi program if found or 'echo twopi' otherwise */
 #undef LLVM_PATH_TWOPI
 
+/* Define to path to xdot.py program if found or 'echo xdot.py' otherwise */
+#undef LLVM_PATH_XDOT_PY
+
 /* Installation prefix directory */
 #undef LLVM_PREFIX