Reland "[DebugInfo] Support DWARF expressions in eh_frame"

Summary:
Original change was D43313 (r326932) and reverted by r326953 because it
broke an LLD test and a windows build. The LLD test was already fixed in
lld commit r326944 (thanks maskray). This is the original change with
the windows build fixed.

llvm-svn: 326970
diff --git a/llvm/tools/llvm-readobj/CMakeLists.txt b/llvm/tools/llvm-readobj/CMakeLists.txt
index dafc9e1..b0550f3 100644
--- a/llvm/tools/llvm-readobj/CMakeLists.txt
+++ b/llvm/tools/llvm-readobj/CMakeLists.txt
@@ -1,5 +1,6 @@
 set(LLVM_LINK_COMPONENTS
   DebugInfoCodeView
+  DebugInfoDWARF
   Object
   BinaryFormat
   Support