Enable multi-dex for incremental settings builds

Change-Id: I265eb5ff508206bd5b4205db612c3519bb9a5ed8

Android.mk

@@ -35,6 +35,8 @@ LOCAL_AAPT_FLAGS := --auto-add-overlay \
 ifneq ($(INCREMENTAL_BUILDS),)
     LOCAL_PROGUARD_ENABLED := disabled
     LOCAL_JACK_ENABLED := incremental
+    LOCAL_DX_FLAGS := --multi-dex
+    LOCAL_JACK_FLAGS := --multi-dex native
 endif
 
 include frameworks/opt/setupwizard/library/common.mk