Convert DM9000 driver for CONFIG_NET_MULTI

All drivers need to be converted to CONFIG_NET_MULTI.
This patch converts the dm9000 driver.

Signed-off-by: Thomas Smits <ts.smits@gmail.com>
Signed-off-by: Remy Bohmer <linux@bohmer.net>
Signed-off-by: Ben Warren <biggerbadderben@gmail.com>
diff --git a/include/netdev.h b/include/netdev.h
index 5571070..aed5c4c 100644
--- a/include/netdev.h
+++ b/include/netdev.h
@@ -75,6 +75,7 @@
 int uec_initialize(int index);
 int uli526x_initialize(bd_t *bis);
 int sh_eth_initialize(bd_t *bis);
+int dm9000_initialize(bd_t *bis);
 
 /* Boards with PCI network controllers can call this from their board_eth_init()
  * function to initialize whatever's on board.