Restrict FDO to only apply to target build.

Change-Id: I0ef4199b34c123a17eaf2c2f18bc8a1496e03cf8
diff --git a/runtime/Android.mk b/runtime/Android.mk
index 58f7940..087c0ea 100644
--- a/runtime/Android.mk
+++ b/runtime/Android.mk
@@ -390,7 +390,9 @@
   LOCAL_CPP_EXTENSION := $$(ART_CPP_EXTENSION)
   ifeq ($$(art_ndebug_or_debug),ndebug)
     LOCAL_MODULE := libart
-    LOCAL_FDO_SUPPORT := true
+    ifeq ($$(art_target_or_host),target)
+      LOCAL_FDO_SUPPORT := true
+    endif
   else # debug
     LOCAL_MODULE := libartd
   endif