[Modules] Update Clang's two files that use DEBUG(...) without defining
DEBUG_TYPE to do so. LLVM's Debug.h requires this as of r206822.

llvm-svn: 206823
diff --git a/clang/lib/Tooling/Tooling.cpp b/clang/lib/Tooling/Tooling.cpp
index 7425e3b..25ade33 100644
--- a/clang/lib/Tooling/Tooling.cpp
+++ b/clang/lib/Tooling/Tooling.cpp
@@ -38,6 +38,8 @@
 #  include <unistd.h>
 #endif
 
+#define DEBUG_TYPE "clang-tooling"
+
 namespace clang {
 namespace tooling {