cmd: Remove <common.h> and add needed includes

Remove <common.h> from all "cmd/" files and when needed add
missing include files directly.

Signed-off-by: Tom Rini <trini@konsulko.com>

cmd/bootstage.c

@@ -3,9 +3,9 @@
  * Copyright (c) 2012, Google Inc. All rights reserved.
  */
 
-#include <common.h>
 #include <bootstage.h>
 #include <command.h>
+#include <vsprintf.h>
 
 static int do_bootstage_report(struct cmd_tbl *cmdtp, int flag, int argc,
 			       char *const argv[])