bd_info: remove bi_barudrate member from struct bd_info

gd->bd->bi_baudrate is a copy of gd->baudrate.

Since baudrate is a common feature for all architectures,
keep gd->baudrate only.

It is true that bi_baudrate was passed to the kernel in that structure
but it was a long time ago.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Cc: Tom Rini <trini@ti.com>
Cc: Simon Glass <sjg@chromium.org>
Cc: Wolfgang Denk <wd@denx.de>
Cc: Heiko Schocher <hs@denx.de>
Acked-by: Michal Simek <monstr@monstr.eu> (For microblaze)
diff --git a/board/muas3001/muas3001.c b/board/muas3001/muas3001.c
index 42b0a03..08eb5e8 100644
--- a/board/muas3001/muas3001.c
+++ b/board/muas3001/muas3001.c
@@ -286,6 +286,8 @@
 }
 
 #if defined(CONFIG_OF_BOARD_SETUP) && defined(CONFIG_OF_LIBFDT)
+DECLARE_GLOBAL_DATA_PTR;
+
 /*
  * update "memory" property in the blob
  */
@@ -314,7 +316,7 @@
 	/* baudrate */
 	nodeoffset = fdt_path_offset (blob, "/soc/cpm/serial");
 	if (nodeoffset >= 0) {
-		speed = cpu_to_be32 (bd->bi_baudrate);
+		speed = cpu_to_be32 (gd->baudrate);
 		ret = fdt_setprop (blob, nodeoffset, "current-speed", &speed,
 					sizeof (unsigned long));
 	if (ret < 0)