Add DataExtractor.cpp to libLLVMSupport.

libLLVMObject depends on llvm::DataExtractor.

Change-Id: Ib4cbcfcd0194dea495e1bc50be0e6a3f54495394
diff --git a/lib/Support/Android.mk b/lib/Support/Android.mk
index 3101609..6983b29 100644
--- a/lib/Support/Android.mk
+++ b/lib/Support/Android.mk
@@ -13,6 +13,7 @@
   CrashRecoveryContext.cpp \
   DAGDeltaAlgorithm.cpp \
   DataStream.cpp \
+  DataExtractor.cpp \
   Debug.cpp \
   DeltaAlgorithm.cpp \
   Dwarf.cpp \