DragonFlyBSD

Due to the missing MODULE_VERSION, stuff like ubt cannot be kldload-ed since
they depend on netbt.

diff --git a/sys/netbt/bt_proto.c b/sys/netbt/bt_proto.c
index 25bf7be..67afacd 100644
--- a/sys/netbt/bt_proto.c
+++ b/sys/netbt/bt_proto.c
@ -63,6 +63,7 @ static moduledata_t netbt_mod = {
};

DECLARE_MODULE(netbt, netbt_mod, SI_SUB_EXEC, SI_ORDER_ANY);
+MODULE_VERSION(netbt, 1);

struct domain btdomain;