ARM: uniphier: clean up board_init

Remove unnecessary DECLARE_GLOBAL_DATA_PTR and header includes.

<common.h> has been replaced with <linux/errno.h> and <linux/printk.h>.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

arch/arm/mach-uniphier/board_init.c

@@ -6,17 +6,14 @@
  * SPDX-License-Identifier:	GPL-2.0+
  */
 
-#include <common.h>
-#include <libfdt.h>
+#include <linux/errno.h>
 #include <linux/io.h>
+#include <linux/printk.h>
 
 #include "init.h"
 #include "micro-support-card.h"
-#include "sg-regs.h"
 #include "soc-info.h"
 
-DECLARE_GLOBAL_DATA_PTR;
-
 #ifdef CONFIG_ARCH_UNIPHIER_LD20
 static void uniphier_ld20_misc_init(void)
 {