board: nuvoton: 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/nuvoton/arbel_evb/arbel_evb.c

@@ -3,7 +3,6 @@
  * Copyright (c) 2022 Nuvoton Technology Corp.
  */
 
-#include <common.h>
 #include <dm.h>
 #include <asm/io.h>
 #include <asm/arch/gcr.h>

board/nuvoton/poleg_evb/poleg_evb.c

@@ -4,7 +4,6 @@
  * Copyright (c) 2021 Nuvoton Technology Corp.
  */
 
-#include <common.h>
 #include <dm.h>
 #include <env.h>
 #include <asm/io.h>