ARM: uniphier: remove unneeded header inclusion from board_late_init.c

<nand.h> is unneeded since commit 9248a78f ("ARM: UniPhier: remove
Denali NAND controller fixup code").

<linux/io.h> is uneeded since commit 1320fa2e ("ARM: uniphier:
remove workaround for the NAND write protect").
Signed-off-by: NMasahiro Yamada <yamada.masahiro@socionext.com>

arch/arm/mach-uniphier/board_late_init.c

@@ -9,9 +9,7 @@
 #include <init.h>
 #include <spl.h>
 #include <linux/libfdt.h>
-#include <nand.h>
 #include <stdio.h>
-#include <linux/io.h>
 #include <linux/printk.h>
 
 #include "init.h"
@@ -53,6 +51,7 @@ fail:
 
 static void uniphier_set_env_addr(const char *env, const char *offset_env)
 {
+	DECLARE_GLOBAL_DATA_PTR;
 	unsigned long offset = 0;
 	const char *str;
 	char *end;