[CMake] Resurrect mis-dropped dependency to ClangDriverOptions since r201842.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@201978 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Frontend/CMakeLists.txt

@@ -33,6 +33,9 @@ add_clang_library(clangFrontend
   TextDiagnosticPrinter.cpp
   VerifyDiagnosticConsumer.cpp
   Warnings.cpp
+
+  DEPENDS
+  ClangDriverOptions
   )
 
 target_link_libraries(clangFrontend

lib/FrontendTool/CMakeLists.txt

@@ -5,6 +5,9 @@ set(LLVM_LINK_COMPONENTS
 
 add_clang_library(clangFrontendTool
   ExecuteCompilerInvocation.cpp
+
+  DEPENDS
+  ClangDriverOptions
   )
 
 target_link_libraries(clangFrontendTool