ehea: Fixed missing tasklet_kill() call

NEQ-Tasklet wasn't killed when module is removed.

Signed-off-by: Thomas Klein <[e-mail]>
Signed-off-by: Jeff Garzik <[e-mail]>

drivers/net/ehea/ehea_main.c

···
 	destroy_workqueue(adapter->ehea_wq);
 
 	ibmebus_free_irq(NULL, adapter->neq->attr.ist1, adapter);
+	tasklet_kill(&adapter->neq_tasklet);
 
 	ehea_destroy_eq(adapter->neq);