x86: crownbay: Enable Intel E1000 NIC support

We don't have driver for the Intel Topcliff PCH Gigabit Ethernet
controller for now, so enable the Intle E1000 NIC support, which
can be plugged into any PCIe slot on the Crown Bay board.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Acked-by: Simon Glass <sjg@chromium.org>
diff --git a/board/intel/crownbay/crownbay.c b/board/intel/crownbay/crownbay.c
index 54670d3..2a254ef 100644
--- a/board/intel/crownbay/crownbay.c
+++ b/board/intel/crownbay/crownbay.c
@@ -7,6 +7,7 @@
 #include <common.h>
 #include <asm/ibmpc.h>
 #include <asm/pnp_def.h>
+#include <netdev.h>
 #include <smsc_lpc47m.h>
 
 #define SERIAL_DEV PNP_DEV(0x2e, 4)
@@ -24,3 +25,8 @@
 {
 	return;
 }
+
+int board_eth_init(bd_t *bis)
+{
+	return pci_eth_init(bis);
+}