Pass instruction-set from runtime through to spawned dex2oat.

Change-Id: I1727af7beb9f710c29124d4d6bc9175e4856f3cc
diff --git a/runtime/Android.mk b/runtime/Android.mk
index 697d1a3..6523b93 100644
--- a/runtime/Android.mk
+++ b/runtime/Android.mk
@@ -73,6 +73,7 @@
 	hprof/hprof.cc \
 	image.cc \
 	indirect_reference_table.cc \
+	instruction_set.cc \
 	instrumentation.cc \
 	intern_table.cc \
 	interpreter/interpreter.cc \