donauboe: replace excessive udelay with msleep

No driver should spin the CPU for 10ms, so better use
an msleep, which is allowed in the ->suspend function.

Signed-off-by: Arnd Bergmann <[e-mail]>
Signed-off-by: Mathieu Poirier <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

drivers/net/irda/donauboe.c

···
 
 /* Flush all packets */
   while ((i--) && (self->txpending))
-    udelay (10000);
+    msleep(10);
 
   spin_lock_irqsave(&self->spinlock, flags);