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>

include/cpu_func.h

@@ -18,7 +18,7 @@
 int cpu_status(u32 nr);
 int cpu_reset(u32 nr);
 int cpu_disable(u32 nr);
-int cpu_release(u32 nr, int argc, char * const argv[]);
+int cpu_release(u32 nr, int argc, char *const argv[]);
 
 static inline int cpumask_next(int cpu, unsigned int mask)
 {