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/arch/arm/mach-imx/cmd_nandbcb.c b/arch/arm/mach-imx/cmd_nandbcb.c
index 94cae14..cc4c890 100644
--- a/arch/arm/mach-imx/cmd_nandbcb.c
+++ b/arch/arm/mach-imx/cmd_nandbcb.c
@@ -12,6 +12,7 @@
  */
 
 #include <common.h>
+#include <command.h>
 #include <malloc.h>
 #include <nand.h>
 #include <dm/devres.h>
@@ -1048,7 +1049,7 @@
 	return ret;
 }
 
-static int do_nandbcb_bcbonly(int argc, char * const argv[])
+static int do_nandbcb_bcbonly(int argc, char *const argv[])
 {
 	struct fcb_block *fcb;
 	struct dbbt_block *dbbt;
@@ -1458,8 +1459,8 @@
 	return ret == 0 ? CMD_RET_SUCCESS : CMD_RET_FAILURE;
 }
 
-static int do_nandbcb(cmd_tbl_t *cmdtp, int flag, int argc,
-		      char * const argv[])
+static int do_nandbcb(struct cmd_tbl *cmdtp, int flag, int argc,
+		      char *const argv[])
 {
 	const char *cmd;
 	int ret = 0;