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/configs/davinci_dvevm.h b/include/configs/davinci_dvevm.h
index 6c5d065..96b6afc 100644
--- a/include/configs/davinci_dvevm.h
+++ b/include/configs/davinci_dvevm.h
@@ -109,6 +109,7 @@
 #define CONFIG_BOOTP_DNS2
 #define CONFIG_BOOTP_SEND_HOSTNAME
 #define CONFIG_NET_RETRY_COUNT	10
+#define CONFIG_NET_MULTI
 /*=====================*/
 /* Flash & Environment */
 /*=====================*/