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>
diff --git a/drivers/net/dm9000x.c b/drivers/net/dm9000x.c
index d575a62..e46a269 100644
--- a/drivers/net/dm9000x.c
+++ b/drivers/net/dm9000x.c
@@ -279,7 +279,7 @@
 
 /* Initialize dm9000 board
 */
-static int dm9000_init(struct eth_device *dev, bd_t *bd)
+static int dm9000_init(struct eth_device *dev, struct bd_info *bd)
 {
 	int i, oft, lnk;
 	u8 io_mode;
@@ -619,7 +619,7 @@
 	DM9000_DBG("dm9000_phy_write(reg:0x%x, value:0x%x)\n", reg, value);
 }
 
-int dm9000_initialize(bd_t *bis)
+int dm9000_initialize(struct bd_info *bis)
 {
 	struct eth_device *dev = &(dm9000_info.netdev);