build_image.py recognize BOARD_PRODUCT_SERVICESIMAGE_PARTITION_RESERVED_SIZE

Test: builds
Bug: 79106666
Change-Id: I00c1a96c09cf7bd9274b65ac0afc47462686171d
diff --git a/core/product.mk b/core/product.mk
index 76ca140..ff2e7e7 100644
--- a/core/product.mk
+++ b/core/product.mk
@@ -396,6 +396,7 @@
 	BOARD_SYSTEMIMAGE_PARTITION_RESERVED_SIZE \
 	BOARD_VENDORIMAGE_PARTITION_RESERVED_SIZE \
 	BOARD_PRODUCTIMAGE_PARTITION_RESERVED_SIZE \
+	BOARD_PRODUCT_SERVICESIMAGE_PARTITION_RESERVED_SIZE \
 	BOARD_SUPER_PARTITION_SIZE \
 	BOARD_SUPER_PARTITION_PARTITION_LIST \