[2.6 patch] mm/hugetlb.c must #include <asm/io.h>

[Adrian Bunk]

This patch fixes the following build error on sh caused by
commit aa888a74977a8f2120ae9332376e179c39a6b07d
(hugetlb: support larger than MAX_ORDER):

<--  snip  -->

...
  CC      mm/hugetlb.o
/home/bunk/linux/kernel-2.6/git/linux-2.6/mm/hugetlb.c: In function 'alloc_bootmem_huge_page':
/home/bunk/linux/kernel-2.6/git/linux-2.6/mm/hugetlb.c:958: error: implicit declaration of function 'virt_to_phys'
make[2]: *** [mm/hugetlb.o] Error 1

<--  snip  -->

Reported-by: Adrian Bunk <bunk@xxxxxxxxxx>
Signed-off-by: Adrian Bunk <bunk@xxxxxxxxxx>

---
98c5be88abb276588ea1f377f08726308765aa3c 
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index a8bf4ab..6101012 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -19,6 +19,7 @@
 
 #include <asm/page.h>
 #include <asm/pgtable.h>
+#include <asm/io.h>
 
 #include <linux/hugetlb.h>
 #include "internal.h"

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