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/eth.c b/net/eth.c
index b86994e..66ecb79 100644
--- a/net/eth.c
+++ b/net/eth.c
@@ -12,6 +12,8 @@
 #include <phy.h>
 #include <asm/errno.h>
 
+DECLARE_GLOBAL_DATA_PTR;
+
 void eth_parse_enetaddr(const char *addr, uchar *enetaddr)
 {
 	char *end;
@@ -250,7 +252,7 @@
 	return 0;
 }
 
-int eth_initialize(bd_t *bis)
+int eth_initialize(void)
 {
 	int num_devices = 0;
 	eth_devices = NULL;
@@ -272,10 +274,10 @@
 	 * If not, call a CPU-specific one
 	 */
 	if (board_eth_init != __def_eth_init) {
-		if (board_eth_init(bis) < 0)
+		if (board_eth_init(gd->bd) < 0)
 			printf("Board Net Initialization Failed\n");
 	} else if (cpu_eth_init != __def_eth_init) {
-		if (cpu_eth_init(bis) < 0)
+		if (cpu_eth_init(gd->bd) < 0)
 			printf("CPU Net Initialization Failed\n");
 	} else
 		printf("Net Initialization Skipped\n");
@@ -362,7 +364,7 @@
 #endif
 
 
-int eth_init(bd_t *bis)
+int eth_init(void)
 {
 	struct eth_device *old_current, *dev;
 
@@ -387,7 +389,7 @@
 	do {
 		debug("Trying %s\n", eth_current->name);
 
-		if (eth_current->init(eth_current, bis) >= 0) {
+		if (eth_current->init(eth_current, gd->bd) >= 0) {
 			eth_current->state = ETH_STATE_ACTIVE;
 
 			return 0;