Disable INET6 support in modules when building the LINT-NOINET6 kernel.

Reviewed by:	bz
MFC after:	1 week

sys/conf/makeLINT.mk

@@ -23,6 +23,7 @@ LINT: ${NOTES} ../../conf/makeLINT.sed
 	echo "nodevice gre"		>> ${.TARGET}-NOINET
 	echo "include ${.TARGET}"	>  ${.TARGET}-NOINET6
 	echo "ident ${.TARGET}-NOINET6"	>> ${.TARGET}-NOINET6
+	echo 'makeoptions MKMODULESENV+="WITHOUT_INET6_SUPPORT="' >> ${.TARGET}-NOINET6
 	echo "nooptions INET6"		>> ${.TARGET}-NOINET6
 	echo "include ${.TARGET}"	>  ${.TARGET}-NOIP
 	echo "ident ${.TARGET}-NOIP"	>> ${.TARGET}-NOIP