staging: lustre: fix sparse warning "should it be static"

Fix the following warning in lib-eq.c
warning: symbol 'lnet_eq_dequeue_event' was not declared. Should it be static?
Signed-off-by: NToby Smith <toby@tismith.id.au>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/lustre/lnet/lnet/lib-eq.c

@@ -238,7 +238,7 @@ lnet_eq_enqueue_event(lnet_eq_t *eq, lnet_event_t *ev)
 	lnet_eq_wait_unlock();
 }
 
-int
+static int
 lnet_eq_dequeue_event(lnet_eq_t *eq, lnet_event_t *ev)
 {
 	int		new_index = eq->eq_deq_seq & (eq->eq_size - 1);