Add a new phony target for building unbundled ART for golem.

Test: m build-art-unbundled-golem
Change-Id: I569d0dd8e5dafa94d43de7eba3ddc134f62bb2eb
diff --git a/Android.mk b/Android.mk
index 8735d7c..7081f7b 100644
--- a/Android.mk
+++ b/Android.mk
@@ -457,7 +457,7 @@
 build-art-target: $(TARGET_OUT_EXECUTABLES)/art $(ART_TARGET_DEPENDENCIES) $(TARGET_CORE_IMG_OUTS)
 
 ########################################################################
-# Phony target for only building what go/lem requires on target.
+# Phony target for only building what go/lem requires for pushing ART on /data.
 .PHONY: build-art-target-golem
 # Also include libartbenchmark, we always include it when running golem.
 # libstdc++ is needed when building for ART_TARGET_LINUX.
@@ -482,6 +482,11 @@
                       $(ART_HOST_SHARED_LIBRARY_BENCHMARK)
 
 ########################################################################
+# Phony target for building what go/lem requires for syncing /system to target.
+.PHONY: build-art-unbundled-golem
+build-art-unbundled-golem: art-runtime linker oatdump $(TARGET_CORE_JARS)
+
+########################################################################
 # Rules for building all dependencies for tests.
 
 .PHONY: build-art-host-tests