CMake: install .def files from source `include/llvm' directory.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85587 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/CMakeLists.txt b/CMakeLists.txt
index ed0bc3a..5b30309 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -322,6 +322,7 @@
 install(DIRECTORY include/
   DESTINATION include
   FILES_MATCHING
+  PATTERN "*.def"
   PATTERN "*.h"
   PATTERN "*.td"
   PATTERN "*.inc"