Add rules to build the factory bundle.

Change-Id: I66bda914a5bd41bda7c8a4314f658924087e2bfb
diff --git a/core/main.mk b/core/main.mk
index 89cbc63..a9e50e4 100644
--- a/core/main.mk
+++ b/core/main.mk
@@ -736,6 +736,9 @@
 .PHONY: factory_ramdisk
 factory_ramdisk: $(INSTALLED_FACTORY_RAMDISK_TARGET)
 
+.PHONY: factory_bundle
+factory_bundle: $(INSTALLED_FACTORY_BUNDLE_TARGET)
+
 .PHONY: systemtarball
 systemtarball: $(INSTALLED_SYSTEMTARBALL_TARGET)
 
@@ -813,6 +816,7 @@
     $(INSTALLED_ANDROID_INFO_TXT_TARGET) \
     $(INSTALLED_RAMDISK_TARGET) \
     $(INSTALLED_FACTORY_RAMDISK_TARGET) \
+    $(INSTALLED_FACTORY_BUNDLE_TARGET) \
    )
 
 # Building a full system-- the default is to build droidcore