omni: soong: add TARGET_ENFORCE_AB_OTA_PARTITION_LIST variable

Change-Id: Iadb506093872fae535189a01058b66966e6a0fcd
diff --git a/build/soong/soong_config.mk b/build/soong/soong_config.mk
index cdc66f1..957167b 100644
--- a/build/soong/soong_config.mk
+++ b/build/soong/soong_config.mk
@@ -10,7 +10,8 @@
 $(call add_json_bool, Target_use_sdclang,                     $(filter true,$(TARGET_USE_SDCLANG)))
 $(call add_json_bool, Target_camera_needs_client_info,        $(filter true,$(TARGET_CAMERA_NEEDS_CLIENT_INFO)))
 $(call add_json_bool, Target_motorized_camera,                $(filter true,$(TARGET_MOTORIZED_CAMERA)))
-$(call add_json_str_omitempty, Target_init_vendor_lib, $(TARGET_INIT_VENDOR_LIB))
+$(call add_json_str_omitempty, Target_init_vendor_lib, 	      $(TARGET_INIT_VENDOR_LIB))
+$(call add_json_bool, Target_enforce_ab_ota_partition_list,   $(filter true,$(TARGET_ENFORCE_AB_OTA_PARTITION_LIST)))
 
 # This causes the build system to strip out the last comma in our nested struct, to keep the JSON valid.
 _json_contents := $(_json_contents)__SV_END