rules_generator: add KERNEL=="<netifname>*" to generated rules

Some boxes, like the PS3, have multiple independent hardware
interfaces, all sharing the same MAC address. If they have
different interface names base names, we can distinguish them
that way.

extras/rule_generator/write_net_rules

@@ -102,6 +102,7 @@ if [ "$INTERFACE_NAME" ]; then
 else
 	# if a rule using the current name already exists, find a new name
 	basename=${INTERFACE%%[0-9]*}
+	match="$match, KERNEL==\"$basename*\""
 	if interface_name_taken; then
 		INTERFACE="$basename$(find_next_available "$basename[0-9]*")"
 		echo "INTERFACE_NEW=$INTERFACE"