IB: Add client reregister event type

Add IB_EVENT_CLIENT_REREGISTER to enum so low-level drivers can
generate "client reregister" events.

Signed-off-by: Leonid Arsh <leonida@voltaire.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

include/rdma/ib_verbs.h

@@ -260,7 +260,8 @@ enum ib_event_type {
 	IB_EVENT_SM_CHANGE,
 	IB_EVENT_SRQ_ERR,
 	IB_EVENT_SRQ_LIMIT_REACHED,
-	IB_EVENT_QP_LAST_WQE_REACHED
+	IB_EVENT_QP_LAST_WQE_REACHED,
+	IB_EVENT_CLIENT_REREGISTER
 };
 
 struct ib_event {