If setupwizard is disabled, don't force it to optional

Change-Id: I15912ed77b88ea94feb149fdd081a309e3cf4678
Signed-off-by: Bruce Beare <bruce.j.beare@intel.com>
diff --git a/core/main.mk b/core/main.mk
index 569d4dc..b28b2f7 100644
--- a/core/main.mk
+++ b/core/main.mk
@@ -271,11 +271,13 @@
 
 ifeq ($(TARGET_BUILD_VARIANT),eng)
 tags_to_install := user debug eng
+ifneq ($(filter ro.setupwizard.mode=ENABLED, $(call collapse-pairs, $(ADDITIONAL_BUILD_PROPERTIES))),)
   # Don't require the setup wizard on eng builds
   ADDITIONAL_BUILD_PROPERTIES := $(filter-out ro.setupwizard.mode=%,\
           $(call collapse-pairs, $(ADDITIONAL_BUILD_PROPERTIES))) \
           ro.setupwizard.mode=OPTIONAL
 endif
+endif
 
 ## tests ##