[POWERPC] Fix swapper_pg_dir size when CONFIG_PTE_64BIT=y on FSL_BOOKE

The size of swapper_pg_dir is 8k instead of 4k when using 64-bit PTEs
(CONFIG_PTE_64BIT).

This was reported by Cedric Hombourger <chombourger@gmail.com>

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
diff --git a/include/asm-powerpc/pgtable-ppc32.h b/include/asm-powerpc/pgtable-ppc32.h
index fea2d8f..d1332bb 100644
--- a/include/asm-powerpc/pgtable-ppc32.h
+++ b/include/asm-powerpc/pgtable-ppc32.h
@@ -86,6 +86,11 @@
  * entries per page directory level: our page-table tree is two-level, so
  * we don't really have any PMD directory.
  */
+#ifndef __ASSEMBLY__
+#define PTE_TABLE_SIZE	(sizeof(pte_t) << PTE_SHIFT)
+#define PGD_TABLE_SIZE	(sizeof(pgd_t) << (32 - PGDIR_SHIFT))
+#endif	/* __ASSEMBLY__ */
+
 #define PTRS_PER_PTE	(1 << PTE_SHIFT)
 #define PTRS_PER_PMD	1
 #define PTRS_PER_PGD	(1 << (32 - PGDIR_SHIFT))