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/m68k/cpu/mcf5445x/cpu.c b/arch/m68k/cpu/mcf5445x/cpu.c
index cb1514c..2608fdd 100644
--- a/arch/m68k/cpu/mcf5445x/cpu.c
+++ b/arch/m68k/cpu/mcf5445x/cpu.c
@@ -21,7 +21,7 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
-int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+int do_reset(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
 {
 	rcm_t *rcm = (rcm_t *) (MMAP_RCM);
 	udelay(1000);