Export some make variables to soong.variables.

Bug: 275472038
Test: CIs
Change-Id: I2e7a07007224364418659453d979e2bee58fe5f9
diff --git a/core/soong_config.mk b/core/soong_config.mk
index 90a2f75..034d044 100644
--- a/core/soong_config.mk
+++ b/core/soong_config.mk
@@ -315,6 +315,10 @@
 
 $(call add_json_list, AfdoProfiles,                $(ALL_AFDO_PROFILES))
 
+$(call add_json_str,  ProductManufacturer, $(PRODUCT_MANUFACTURER))
+$(call add_json_str,  ProductBrand,        $(PRODUCT_BRAND))
+$(call add_json_list, BuildVersionTags,    $(BUILD_VERSION_TAGS))
+
 $(call json_end)
 
 $(file >$(SOONG_VARIABLES).tmp,$(json_contents))