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/rtl8169.c b/drivers/net/rtl8169.c
index fb4fae2..2e1304e 100644
--- a/drivers/net/rtl8169.c
+++ b/drivers/net/rtl8169.c
@@ -901,7 +901,7 @@
 /**************************************************************************
 RESET - Finish setting up the ethernet interface
 ***************************************************************************/
-static int rtl_reset(struct eth_device *dev, bd_t *bis)
+static int rtl_reset(struct eth_device *dev, struct bd_info *bis)
 {
 	rtl8169_common_start((pci_dev_t)(unsigned long)dev->priv,
 			     dev->enetaddr, dev->iobase);
@@ -1119,7 +1119,7 @@
 }
 
 #ifndef CONFIG_DM_ETH
-int rtl8169_initialize(bd_t *bis)
+int rtl8169_initialize(struct bd_info *bis)
 {
 	pci_dev_t devno;
 	int card_number = 0;