Convert CS8900 Ethernet driver to CONFIG_NET_MULTI API

All in-tree boards that use this controller have CONFIG_NET_MULTI added
Also:
  - changed CONFIG_DRIVER_CS8900 to CONFIG_CS8900
  - changed CS8900_BASE to CONFIG_CS8900_BASE
  - changed CS8900_BUS?? to CONFIG_CS8900_BUS??
  - cleaned up line lengths
  - modified VCMA9 command function that accesses the device
  - removed MAC address initialization from lib_arm/board.c

Signed-off-by: Ben Warren <biggerbadderben@gmail.com>
Tested-by: Wolfgang Denk <wd@denx.de>
Acked-by: Wolfgang Denk <wd@denx.de>
diff --git a/include/configs/smdk6400.h b/include/configs/smdk6400.h
index ddc8e71..f6e1221 100644
--- a/include/configs/smdk6400.h
+++ b/include/configs/smdk6400.h
@@ -74,9 +74,10 @@
 /*
  * Hardware drivers
  */
-#define CONFIG_DRIVER_CS8900	1	/* we have a CS8900 on-board	*/
-#define CS8900_BASE	  	0x18800300
-#define CS8900_BUS16		1 	/* follow the Linux driver	*/
+#define CONFIG_NET_MULTI
+#define CONFIG_CS8900			/* we have a CS8900 on-board	*/
+#define CONFIG_CS8900_BASE	  	0x18800300
+#define CONFIG_CS8900_BUS16		/* follow the Linux driver	*/
 
 /*
  * select serial console configuration