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)

arch/avr32/include/asm/u-boot.h

@@ -7,7 +7,6 @@
 #define __ASM_U_BOOT_H__ 1
 
 typedef struct bd_info {
-	unsigned int		bi_baudrate;
 	unsigned char		bi_phy_id[4];
 	unsigned long		bi_board_number;
 	void			*bi_boot_params;

arch/avr32/lib/board.c

@@ -220,7 +220,6 @@ void board_init_f(ulong board_type)
 	 */
 	bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
 	bd->bi_dram[0].size = sdram_size;
-	bd->bi_baudrate = gd->baudrate;
 
 	memcpy(new_gd, gd, sizeof(gd_t));