command: Remove the cmd_tbl_t typedef

We should not use typedefs in U-Boot. They cannot be used as forward
declarations which means that header files must include the full header to
access them.

Drop the typedef and rename the struct to remove the _s suffix which is
now not useful.

This requires quite a few header-file additions.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/board/freescale/ls1012ardb/ls1012ardb.c b/board/freescale/ls1012ardb/ls1012ardb.c
index fc929c4..5b814f7 100644
--- a/board/freescale/ls1012ardb/ls1012ardb.c
+++ b/board/freescale/ls1012ardb/ls1012ardb.c
@@ -4,6 +4,7 @@
  */
 
 #include <common.h>
+#include <command.h>
 #include <fdt_support.h>
 #include <hang.h>
 #include <i2c.h>
@@ -394,8 +395,8 @@
 	return ret;
 }
 
-static int flash_bank_cmd(cmd_tbl_t *cmdtp, int flag, int argc,
-			  char * const argv[])
+static int flash_bank_cmd(struct cmd_tbl *cmdtp, int flag, int argc,
+			  char *const argv[])
 {
 	if (argc != 2)
 		return CMD_RET_USAGE;