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/flash.c

@@ -7,9 +7,9 @@
 /*
  * FLASH support
  */
-#include <common.h>
 #include <command.h>
 #include <log.h>
+#include <vsprintf.h>
 #include <uuid.h>
 
 #if defined(CONFIG_CMD_MTDPARTS)