net: Remove the bd* parameter from net stack functions

This value is not used by the network stack and is available in the
global data, so stop passing it around.  For the one legacy function
that still expects it (init op on old Ethernet drivers) pass in the
global pointer version directly to avoid changing that interface.

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
Reported-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Simon Glass <sjg@chromium.org>
(Trival fix to remove an unneeded variable declaration in 4xx_enet.c)
diff --git a/net/net.c b/net/net.c
index 4b3c90e..e5ab07c 100644
--- a/net/net.c
+++ b/net/net.c
@@ -324,7 +324,6 @@
 
 int NetLoop(enum proto_t protocol)
 {
-	bd_t *bd = gd->bd;
 	int ret = -1;
 
 	NetRestarted = 0;
@@ -337,12 +336,12 @@
 	if (eth_is_on_demand_init() || protocol != NETCONS) {
 		eth_halt();
 		eth_set_current();
-		if (eth_init(bd) < 0) {
+		if (eth_init() < 0) {
 			eth_halt();
 			return -1;
 		}
 	} else
-		eth_init_state_only(bd);
+		eth_init_state_only();
 
 restart:
 #ifdef CONFIG_USB_KEYBOARD
@@ -618,7 +617,7 @@
 #if !defined(CONFIG_NET_DO_NOT_TRY_ANOTHER)
 	eth_try_another(!NetRestarted);
 #endif
-	eth_init(gd->bd);
+	eth_init();
 	if (NetRestartWrap) {
 		NetRestartWrap = 0;
 		if (NetDevExists) {