[PATCH] build fails on sparc64 in hugetlbpage.c

From: Romain Francoise <romain@orebokech.com>

arch/sparc64/mm/hugetlbpage.c does not include linux/module.h so
EXPORT_SYMBOL prints out warnings, and since sparc64 Makefiles have
-Werror, the build fails.

arch/sparc64/mm/hugetlbpage.c

@@ -13,6 +13,7 @@
 #include <linux/smp_lock.h>
 #include <linux/slab.h>
 #include <linux/sysctl.h>
+#include <linux/module.h>
 
 #include <asm/mman.h>
 #include <asm/pgalloc.h>