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/board/liebherr/display5/display5.c b/board/liebherr/display5/display5.c
index ec55fdf..ada7cf5 100644
--- a/board/liebherr/display5/display5.c
+++ b/board/liebherr/display5/display5.c
@@ -136,7 +136,7 @@
 }
 
 #if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP)
-int ft_board_setup(void *blob, bd_t *bd)
+int ft_board_setup(void *blob, struct bd_info *bd)
 {
 	fdt_fixup_ethernet(blob);
 	return 0;
diff --git a/board/liebherr/display5/spl.c b/board/liebherr/display5/spl.c
index ac4f23f..23959c2 100644
--- a/board/liebherr/display5/spl.c
+++ b/board/liebherr/display5/spl.c
@@ -288,7 +288,7 @@
 	.max_bus_width = 8,
 };
 
-int board_mmc_init(bd_t *bd)
+int board_mmc_init(struct bd_info *bd)
 {
 	displ5_set_iomux_usdhc_spl();
 
diff --git a/board/liebherr/mccmon6/spl.c b/board/liebherr/mccmon6/spl.c
index b234f06..56eae3b 100644
--- a/board/liebherr/mccmon6/spl.c
+++ b/board/liebherr/mccmon6/spl.c
@@ -528,7 +528,7 @@
 	return ret;
 }
 
-int board_mmc_init(bd_t *bis)
+int board_mmc_init(struct bd_info *bis)
 {
 	int ret;
 	u32 index = 0;
diff --git a/board/liebherr/xea/xea.c b/board/liebherr/xea/xea.c
index 4062c6f..9286f4c 100644
--- a/board/liebherr/xea/xea.c
+++ b/board/liebherr/xea/xea.c
@@ -189,7 +189,7 @@
 	return 0;
 }
 
-int ft_board_setup(void *blob, bd_t *bd)
+int ft_board_setup(void *blob, struct bd_info *bd)
 {
 	/*
 	 * i.MX28 L2 switch needs manual update (fixup) of eth MAC address