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/binop.c

@@ -64,7 +64,8 @@ void write_to_mem(char *varname, u8 *result, ulong len)
 	unmap_sysmem(buf);
 }
 
-static int do_binop(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+static int do_binop(struct cmd_tbl *cmdtp, int flag, int argc,
+		    char *const argv[])
 {
 	ulong len;
 	u8 *result, *src1, *src2;