explicitly list SDK image dependencies
The SDK build used to have the update package as a dependency, in
order to force various image files to be built. Now the the update
package can't be built for sdk-eng, list the individual images needed
instead.
diff --git a/core/Makefile b/core/Makefile
index 0b7aa88..713c81b 100644
--- a/core/Makefile
+++ b/core/Makefile
@@ -1093,7 +1093,9 @@
$(target_notice_file_txt) \
$(tools_notice_file_txt) \
$(OUT_DOCS)/offline-sdk-timestamp \
- $(INTERNAL_UPDATE_PACKAGE_TARGET) \
+ $(INSTALLED_SYSTEMIMAGE) \
+ $(INSTALLED_USERDATAIMAGE_TARGET) \
+ $(INSTALLED_RAMDISK_TARGET) \
$(INSTALLED_SDK_BUILD_PROP_TARGET) \
$(ATREE_FILES) \
$(atree_dir)/sdk.atree \