Export BOARD_MOVE_RECOVERY_RESOURCES_TO_VENDOR_BOOT to Soong

Test: pass
Bug: 156098440
Change-Id: I84f26f7f12c53c0cc120c8122e75f68571794ac7
diff --git a/core/soong_config.mk b/core/soong_config.mk
index de60b5b..c221c55 100644
--- a/core/soong_config.mk
+++ b/core/soong_config.mk
@@ -220,6 +220,8 @@
 $(call add_json_list, BoardKernelBinaries, $(BOARD_KERNEL_BINARIES))
 $(call add_json_list, BoardKernelModuleInterfaceVersions, $(BOARD_KERNEL_MODULE_INTERFACE_VERSIONS))
 
+$(call add_json_bool, BoardMoveRecoveryResourcesToVendorBoot, $(BOARD_MOVE_RECOVERY_RESOURCES_TO_VENDOR_BOOT))
+
 $(call json_end)
 
 $(file >$(SOONG_VARIABLES).tmp,$(json_contents))