[JITLink][ORC] Add JITLink to the list of dependencies for ORC.

The new ObjectLinkingLayer in ORC depends on JITLink.

This should fix the build error at
http://lab.llvm.org:8011/builders/clang-ppc64le-linux-multistage/builds/9621

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@358832 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/ExecutionEngine/Orc/LLVMBuild.txt b/lib/ExecutionEngine/Orc/LLVMBuild.txt
index c5af047..af7ef49 100644
--- a/lib/ExecutionEngine/Orc/LLVMBuild.txt
+++ b/lib/ExecutionEngine/Orc/LLVMBuild.txt
@@ -18,4 +18,5 @@
 type = Library
 name = OrcJIT
 parent = ExecutionEngine
-required_libraries = Core ExecutionEngine Object MC RuntimeDyld Support Target TransformUtils
+required_libraries = Core ExecutionEngine JITLink Object MC RuntimeDyld Support
+                     Target TransformUtils