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/license.c

@@ -12,7 +12,8 @@
 #include "license_data_gz.h"
 #include "license_data_size.h"
 
-static int do_license(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+static int do_license(struct cmd_tbl *cmdtp, int flag, int argc,
+		      char *const argv[])
 {
 	char *dst;
 	unsigned long len = data_size;