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

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

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

board/grinn/chiliboard/board.c

@@ -4,7 +4,7 @@
  * Copyright (C) 2017, Grinn - http://grinn-global.com/
  */
 
-#include <common.h>
+#include <config.h>
 #include <init.h>
 #include <net.h>
 #include <asm/arch/chilisom.h>

board/grinn/liteboard/board.c

@@ -4,7 +4,6 @@
  * Copyright (C) 2016 Grinn
  */
 
-#include <common.h>
 #include <command.h>
 #include <init.h>
 #include <asm/arch/clock.h>