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/lan91c96.c b/drivers/net/lan91c96.c
index 13900f1..c2f6111 100644
--- a/drivers/net/lan91c96.c
+++ b/drivers/net/lan91c96.c
@@ -114,7 +114,7 @@
  . print a warning and set the environment and other globals with the default.
  . If an EEPROM is present it really should be consulted.
 */
-static int smc_get_ethaddr(bd_t *bd, struct eth_device *dev);
+static int smc_get_ethaddr(struct bd_info *bd, struct eth_device *dev);
 static int get_rom_mac(struct eth_device *dev, unsigned char *v_rom_mac);
 
 /* ------------------------------------------------------------
@@ -471,7 +471,7 @@
  * Set up everything, reset the card, etc ..
  *
  */
-static int smc_open(bd_t *bd, struct eth_device *dev)
+static int smc_open(struct bd_info *bd, struct eth_device *dev)
 {
 	int i, err;			/* used to set hw ethernet address */
 
@@ -674,7 +674,7 @@
 }
 #endif /* SMC_DEBUG > 2 */
 
-static int  lan91c96_init(struct eth_device *dev, bd_t *bd)
+static int  lan91c96_init(struct eth_device *dev, struct bd_info *bd)
 {
 	return smc_open(bd, dev);
 }
@@ -701,7 +701,7 @@
  * found, the environment takes precedence.
  */
 
-static int smc_get_ethaddr(bd_t *bd, struct eth_device *dev)
+static int smc_get_ethaddr(struct bd_info *bd, struct eth_device *dev)
 {
 	uchar v_mac[6];