BUG_ON() Conversion in drivers/net/

this changes if() BUG(); constructs to BUG_ON() which is
cleaner, contains unlikely() and can better optimized away.

Signed-off-by: Eric Sesterhenn <snakebyte@gmx.de>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
diff --git a/drivers/net/e1000/e1000_main.c b/drivers/net/e1000/e1000_main.c
index 49cd096..add8dc4 100644
--- a/drivers/net/e1000/e1000_main.c
+++ b/drivers/net/e1000/e1000_main.c
@@ -3308,8 +3308,7 @@
 
 	while (poll_dev != &adapter->polling_netdev[i]) {
 		i++;
-		if (unlikely(i == adapter->num_rx_queues))
-			BUG();
+		BUG_ON(i == adapter->num_rx_queues);
 	}
 
 	if (likely(adapter->num_tx_queues == 1)) {