treewide: convert bd_t to struct bd_info by coccinelle

The Linux coding style guide (Documentation/process/coding-style.rst)
clearly says:

  It's a **mistake** to use typedef for structures and pointers.

Besides, using typedef for structures is annoying when you try to make
headers self-contained.

Let's say you have the following function declaration in a header:

  void foo(bd_t *bd);

This is not self-contained since bd_t is not defined.

To tell the compiler what 'bd_t' is, you need to include <asm/u-boot.h>

  #include <asm/u-boot.h>
  void foo(bd_t *bd);

Then, the include direcective pulls in more bloat needlessly.

If you use 'struct bd_info' instead, it is enough to put a forward
declaration as follows:

  struct bd_info;
  void foo(struct bd_info *bd);

Right, typedef'ing bd_t is a mistake.

I used coccinelle to generate this commit.

The semantic patch that makes this change is as follows:

  <smpl>
  @@
  typedef bd_t;
  @@
  -bd_t
  +struct bd_info
  </smpl>

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>

board/compulab/cm_fx6/cm_fx6.c

@@ -458,7 +458,7 @@ static int handle_mac_address(char *env_var, uint eeprom_bus)
 
 #define SB_FX6_I2C_EEPROM_BUS	0
 #define NO_MAC_ADDR		"No MAC address found for %s\n"
-int board_eth_init(bd_t *bis)
+int board_eth_init(struct bd_info *bis)
 {
 	int err;
 
@@ -537,7 +537,7 @@ static const struct node_info nodes[] = {
 	{ "jedec,spi-nor",	MTD_DEV_TYPE_NOR,	},
 };
 
-int ft_board_setup(void *blob, bd_t *bd)
+int ft_board_setup(void *blob, struct bd_info *bd)
 {
 	u32 baseboard_rev;
 	int nodeoffset;