Build product/odm build.prop with Soong

Bug: 322090587
Test: compare build.prop before and after, boot
Change-Id: Iab157cf313d62c1c95ef66dd0a2b9563ee60ab46
diff --git a/core/soong_extra_config.mk b/core/soong_extra_config.mk
index 76da0d7..00b5c0f 100644
--- a/core/soong_extra_config.mk
+++ b/core/soong_extra_config.mk
@@ -90,6 +90,10 @@
 
 $(call add_json_bool, ProductNotDebuggableInUserdebug, $(PRODUCT_NOT_DEBUGGABLE_IN_USERDEBUG))
 
+$(call add_json_bool, UsesProductImage, $(filter true,$(BOARD_USES_PRODUCTIMAGE)))
+
+$(call add_json_bool, TargetBoots16K, $(filter true,$(TARGET_BOOTS_16K)))
+
 $(call json_end)
 
 $(shell mkdir -p $(dir $(SOONG_EXTRA_VARIABLES)))