x86: fix pgtable_t build breakage

Commit 2f569afd ("CONFIG_HIGHPTE vs.
sub-page page tables") caused some build breakage due to pgtable_t only
getting declared in the CONFIG_X86_PAE case.

Move the declaration outside the PAE section.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

include/asm-x86/page_32.h

@@ -50,11 +50,13 @@ typedef unsigned long	phys_addr_t;
 typedef union { pteval_t pte, pte_low; } pte_t;
 typedef pte_t boot_pte_t;
 
-typedef struct page *pgtable_t;
-
 #endif	/* __ASSEMBLY__ */
 #endif	/* CONFIG_X86_PAE */
 
+#ifndef __ASSEMBLY__
+typedef struct page *pgtable_t;
+#endif
+
 #ifdef CONFIG_HUGETLB_PAGE
 #define HAVE_ARCH_HUGETLB_UNMAPPED_AREA
 #endif