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/x86/lib/interrupts.c b/arch/x86/lib/interrupts.c
index b23b8fd..40ba7fc 100644
--- a/arch/x86/lib/interrupts.c
+++ b/arch/x86/lib/interrupts.c
@@ -127,7 +127,7 @@
 #endif
 
 #if defined(CONFIG_CMD_IRQ)
-int do_irqinfo(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+int do_irqinfo(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
 {
 #if !CONFIG_IS_ENABLED(X86_64)
 	int irq;