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/arch/arm/mach-uniphier/fdt-fixup.c b/arch/arm/mach-uniphier/fdt-fixup.c
index 980c260..dfa32fd 100644
--- a/arch/arm/mach-uniphier/fdt-fixup.c
+++ b/arch/arm/mach-uniphier/fdt-fixup.c
@@ -18,7 +18,7 @@
  * The DRAM PHY requires 64 byte scratch area in each DRAM channel
  * for its dynamic PHY training feature.
  */
-static int uniphier_ld20_fdt_mem_rsv(void *fdt, bd_t *bd)
+static int uniphier_ld20_fdt_mem_rsv(void *fdt, struct bd_info *bd)
 {
 	unsigned long rsv_addr;
 	const unsigned long rsv_size = 64;
@@ -46,7 +46,7 @@
 	return 0;
 }
 
-int ft_board_setup(void *fdt, bd_t *bd)
+int ft_board_setup(void *fdt, struct bd_info *bd)
 {
 	static const struct node_info nodes[] = {
 		{ "socionext,uniphier-denali-nand-v5a", MTD_DEV_TYPE_NAND },