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/board/samsung/smdk6400/smdk6400.c b/board/samsung/smdk6400/smdk6400.c
index 52cd174..561c0c8 100644
--- a/board/samsung/smdk6400/smdk6400.c
+++ b/board/samsung/smdk6400/smdk6400.c
@@ -29,6 +29,7 @@
  */
 
 #include <common.h>
+#include <netdev.h>
 #include <s3c6400.h>
 
 /* ------------------------------------------------------------------------- */
@@ -117,3 +118,14 @@
 	} else
 		return 0;
 }
+
+#ifdef CONFIG_CMD_NET
+int board_eth_init(bd_t *bis)
+{
+	int rc = 0;
+#ifdef CONFIG_CS8900
+	rc = cs8900_initialize(0, CONFIG_CS8900_BASE);
+#endif
+	return rc;
+}
+#endif