[clang-tidy] Add missing dependency of libtooling to misc module

Summary:
The new API for fixit is in libtooling and the library misc in clang-tidy
didn't had the appropriate dependency.

This commit was breaking some build bots:
http://reviews.llvm.org/D19547

This commit tried (but failed) to fix it:
http://reviews.llvm.org/D20180

To repro, you can make a build with these flags:
```
cmake -DBUILD_SHARED_LIBS=ON
```

Thanks rnk@ for helping figuring out.

Reviewers: alexfh, rnk

Subscribers: cfe-commits

Differential Revision: http://reviews.llvm.org/D20182

llvm-svn: 269240

clang-tools-extra/clang-tidy/misc/CMakeLists.txt

@@ -50,4 +50,5 @@ add_clang_library(clangTidyMiscModule
   clangLex
   clangTidy
   clangTidyUtils
+  clangTooling
   )