Moved initialization of RTL8139 Ethernet controller to board_eth_init()

Affected boards:
	hidden_dragon
	MPC8544DS
	MPC8610HPCN
	R2DPLUS
	TB0229

Removed initialization of the driver from net/eth.c

Signed-off-by: Ben Warren <biggerbadderben@gmail.com>
diff --git a/board/tb0229/tb0229.c b/board/tb0229/tb0229.c
index 921bd3a..2abb4a7 100644
--- a/board/tb0229/tb0229.c
+++ b/board/tb0229/tb0229.c
@@ -46,3 +46,8 @@
 
 	return 0;
 }
+
+int board_eth_init(bd_t *bis)
+{
+	return pci_eth_init(bis);
+}