Net: Clean up LAN91C96 Support

A previous Commit converted the LAN91C96 Ethernet driver to using the
CONFIG_NET_MULTI API, but did not include full board support.  This patch
finishes the job.

Signed-off-by: Ben Warren <biggerbadderben@gmail.com>
diff --git a/board/logicpd/zoom2/zoom2.c b/board/logicpd/zoom2/zoom2.c
index dadbeb6..21afc29 100644
--- a/board/logicpd/zoom2/zoom2.c
+++ b/board/logicpd/zoom2/zoom2.c
@@ -29,6 +29,7 @@
  * MA 02111-1307 USA
  */
 #include <common.h>
+#include <netdev.h>
 #ifdef CONFIG_STATUS_LED
 #include <status_led.h>
 #endif
@@ -177,3 +178,14 @@
 	/* platform specific muxes */
 	MUX_ZOOM2 ();
 }
+
+#ifdef CONFIG_CMD_NET
+int board_eth_init(bd_t *bis)
+{
+	int rc = 0;
+#ifdef CONFIG_LAN91C96
+	rc = lan91c96_initialize(0, CONFIG_LAN91C96_BASE);
+#endif
+	return rc;
+}
+#endif