[CMake]Use LLVM_LIBRARY_DIR for lib path.

Summary:
This makes sure the correct lib path is being used when `CMAKE_CFG_INTDIR` or
`LLVM_LIBDIR_SUFFIX` is set.

Reviewers: beanz

Subscribers: mgorny, srhines, pirama, llvm-commits

Differential Revision: https://reviews.llvm.org/D35318

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@307985 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed