Switched davinci_emac Ethernet driver to use newer API

Added CONFIG_NET_MULTI to all Davinci boards
Removed all calls to Davinci network driver from board code
Added cpu_eth_init() to cpu/arm926ejs/cpu.c

Signed-off-by: Ben Warren <biggerbadderben@gmail.com>
diff --git a/include/netdev.h b/include/netdev.h
index 4f2b23a..df3bc63 100644
--- a/include/netdev.h
+++ b/include/netdev.h
@@ -44,6 +44,7 @@
 int au1x00_enet_initialize(bd_t*);
 int bfin_EMAC_initialize(bd_t *bis);
 int dc21x4x_initialize(bd_t *bis);
+int davinci_emac_initialize(void);
 int dnet_eth_initialize(int id, void *regs, unsigned int phy_addr);
 int e1000_initialize(bd_t *bis);
 int eepro100_initialize(bd_t *bis);