Don't fork dex2oat process on target device.

Change-Id: I35370d328aaa1aaaed5b56e62e51c4c74afa9cba
diff --git a/src/compiler_llvm/compiler_llvm.cc b/src/compiler_llvm/compiler_llvm.cc
index ca0a4da..681b367 100644
--- a/src/compiler_llvm/compiler_llvm.cc
+++ b/src/compiler_llvm/compiler_llvm.cc
@@ -183,7 +183,7 @@
   }
 
   // Materialize the llvm::Module into ELF object file
-  cunit->Materialize();
+  cunit->Materialize(compiler_->GetThreadCount());
 
   // Load ELF image when automatic ELF loading is enabled
   if (IsAutoElfLoadingEnabled()) {