[DO NOT MERGE][FactoryOta Unbundling]Specify the path to FactoryOtaPrebuilt

Bug: 197603311
Test: E2E with Forrest build pass
Change-Id: I8172f4f74e85f013b898e37fb19276411ab34ac3
diff --git a/device-common.mk b/device-common.mk
index 864cc3c..250de1c 100644
--- a/device-common.mk
+++ b/device-common.mk
@@ -25,7 +25,7 @@
     frameworks/native/data/etc/android.software.verified_boot.xml:$(TARGET_COPY_OUT_VENDOR)/etc/permissions/android.software.verified_boot.xml
 
 # Factory OTA
--include vendor/google/factoryota/client/factoryota.mk
+-include vendor/unbundled_google/packages/FactoryOtaPrebuilt/factoryota.mk
 
 # Set system properties identifying the chipset
 PRODUCT_VENDOR_PROPERTIES += ro.soc.manufacturer=Google