Enable CONFIG_NET_MULTI on all remaining PPC4xx boards

All in-tree PPC4xx boards now use CONFIG_NET_MULTI

Signed-off-by: Ben Warren <biggerbadderben@gmail.com>
Signed-off-by: Stefan Roese <sr@denx.de>
diff --git a/include/configs/csb472.h b/include/configs/csb472.h
index 9b3a11c..24b961f 100644
--- a/include/configs/csb472.h
+++ b/include/configs/csb472.h
@@ -183,6 +183,7 @@
 #define CONFIG_PHY_CMD_DELAY	40	/* PHY COMMAND delay		*/
 					/* 32usec min. for LXT971A	*/
 #define CONFIG_PHY_RESET_DELAY	300	/* PHY RESET recovery delay	*/
+#define CONFIG_NET_MULTI
 
 /*
  * RTC configuration