Add the missing rule for including product_services.img into vbmeta.img.

Bug: 80741439
Test: `m -j vbmetaimage` for a target that uses product_services image
      (i.e. `BOARD_PRODUCT_SERVICESIMAGE_FILE_SYSTEM_TYPE := ext4`).
      Verify that the generated `vbmeta.img` includes the descriptor for
      `product_services.img`.
Change-Id: Ia2d64523319c3313803acbc63dd56154a0426334
diff --git a/core/Makefile b/core/Makefile
index f11e3a6..7a6c9fc 100644
--- a/core/Makefile
+++ b/core/Makefile
@@ -2669,6 +2669,15 @@
 endif
 endif
 
+ifdef INSTALLED_PRODUCT_SERVICESIMAGE_TARGET
+ifdef BOARD_AVB_PRODUCT_SERVICES_KEY_PATH
+$(eval $(call check-and-set-avb-chain-args,PRODUCT_SERVICES))
+else
+INTERNAL_AVB_MAKE_VBMETA_IMAGE_ARGS += \
+    --include_descriptors_from_image $(INSTALLED_PRODUCT_SERVICESIMAGE_TARGET)
+endif
+endif
+
 ifdef INSTALLED_ODMIMAGE_TARGET
 ifdef BOARD_AVB_ODM_KEY_PATH
 $(eval $(call check-and-set-avb-chain-args,ODM))