adapt to the coop-by-default syntax in our port

Index: mono/tests/fullaot-mixed/Makefile.am
--- mono/tests/fullaot-mixed/Makefile.am.orig
+++ mono/tests/fullaot-mixed/Makefile.am
@@ -51,7 +51,7 @@ $(AOTDIR)/%.exe: %.exe
 
 if !X86
 if !DISABLE_INTERPRETER
-if !ENABLE_COOP_SUSPEND
+if DISABLE_COOP_SUSPEND
 check: $(AOT_IMAGES) $(TEST_IMAGES)
 	MONO_PATH="$(AOTDIR)$(PLATFORM_PATH_SEPARATOR)$(CLASS)" $(MONO_EXE) --aot-path=$(AOTDIR) --full-aot-interp $(AOTDIR)/lambda.exe
 endif