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>

cmd/boot.c

@@ -16,12 +16,12 @@
 /* Allow ports to override the default behavior */
 __attribute__((weak))
 unsigned long do_go_exec(ulong (*entry)(int, char * const []), int argc,
-				 char * const argv[])
+				 char *const argv[])
 {
 	return entry (argc, argv);
 }
 
-static int do_go(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+static int do_go(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
 {
 	ulong	addr, rc;
 	int     rcode = 0;