board: freescale: Remove <common.h> and add needed includes

Remove <common.h> from this board vendor directory and when needed
add missing include files directly.

Acked-by: Jason Liu <jason.hui.liu@nxp.com>
Acked-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/board/freescale/common/cmd_esbc_validate.c b/board/freescale/common/cmd_esbc_validate.c
index 6c09626..d4192e5 100644
--- a/board/freescale/common/cmd_esbc_validate.c
+++ b/board/freescale/common/cmd_esbc_validate.c
@@ -3,10 +3,10 @@
  * Copyright 2015 Freescale Semiconductor, Inc.
  */
 
-#include <common.h>
 #include <command.h>
 #include <env.h>
 #include <fsl_validate.h>
+#include <vsprintf.h>
 
 int do_esbc_halt(struct cmd_tbl *cmdtp, int flag, int argc,
 		 char *const argv[])