camera: disable partial result by default for factory build

Test: build pass
Bug: 190228974
Bug: 190250102
Change-Id: I92c6d3f9e85a3b9d04a48b5c6d8cd5bdde7a63c0
diff --git a/factory_common.mk b/factory_common.mk
index 72d48d7..ecd1232 100644
--- a/factory_common.mk
+++ b/factory_common.mk
@@ -29,6 +29,7 @@
 
 # Disable camera related features for factory builds
 PRODUCT_PROPERTY_OVERRIDES += \
+    persist.vendor.camera.partial_result_count=1 \
     vendor.camera.debug.bypass_face_ssd_processor=1 \
     vendor.camera.debug.csi_ebuf_enable=0 \
     vendor.camera.debug.enable_face_detection=0 \