net/4xx: Install interrupt handler after driver registration

Only install der 4xx-EMAC interrupt handlers *after* the core
network driver is registered.

This problem was noticed on the APM Taishan 440GX board, where
the board hung upon bootup after displaying "Net:".

Signed-off-by: Stefan Roese <sr@denx.de>

drivers/net/4xx_enet.c

@@ -2035,6 +2035,13 @@ int ppc_4xx_eth_initialize (bd_t * bis)
 		dev->send = ppc_4xx_eth_send;
 		dev->recv = ppc_4xx_eth_rx;
 
+		eth_register(dev);
+
+#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
+		miiphy_register(dev->name,
+				emac4xx_miiphy_read, emac4xx_miiphy_write);
+#endif
+
 		if (0 == virgin) {
 			/* set the MAL IER ??? names may change with new spec ??? */
 #if defined(CONFIG_440SPE) || \
@@ -2072,13 +2079,6 @@ int ppc_4xx_eth_initialize (bd_t * bis)
 					     dev);
 			virgin = 1;
 		}
-
-		eth_register (dev);
-
-#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
-		miiphy_register (dev->name,
-				 emac4xx_miiphy_read, emac4xx_miiphy_write);
-#endif
 	}			/* end for each supported device */
 
 	return 0;