CMake: Add the new dependency from libSema to LLVM's libs.

Should fix the failures seen on some linux builders.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@161629 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/CMakeLists.txt b/lib/Sema/CMakeLists.txt
index 9780f51..46dfa05 100644
--- a/lib/Sema/CMakeLists.txt
+++ b/lib/Sema/CMakeLists.txt
@@ -1,3 +1,10 @@
+set(LLVM_LINK_COMPONENTS
+  ${LLVM_TARGETS_TO_BUILD}
+  asmparser
+  support
+  mc
+  )
+
 add_clang_library(clangSema
   AnalysisBasedWarnings.cpp
   AttributeList.cpp