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/board/ronetix/pm9261/pm9261.c b/board/ronetix/pm9261/pm9261.c
index 1f7679a..b96f745 100644
--- a/board/ronetix/pm9261/pm9261.c
+++ b/board/ronetix/pm9261/pm9261.c
@@ -288,7 +288,7 @@
 	 * Initialize ethernet HW addr prior to starting Linux,
 	 * needed for nfsroot
 	 */
-	eth_init(gd->bd);
+	eth_init();
 #endif
 }
 #endif