powerpc: import a gfp_t fix to arch/powerpc/mm/pgtable_32.c

This applies the same fix as Al Viro recently made to
arch/ppc/mm/pgtable.c.
Signed-off-by: NPaul Mackerras <paulus@samba.org>

arch/powerpc/mm/pgtable_32.c

@@ -114,9 +114,9 @@ struct page *pte_alloc_one(struct mm_struct *mm, unsigned long address)
 	struct page *ptepage;
 
 #ifdef CONFIG_HIGHPTE
-	int flags = GFP_KERNEL | __GFP_HIGHMEM | __GFP_REPEAT;
+	gfp_t flags = GFP_KERNEL | __GFP_HIGHMEM | __GFP_REPEAT;
 #else
-	int flags = GFP_KERNEL | __GFP_REPEAT;
+	gfp_t flags = GFP_KERNEL | __GFP_REPEAT;
 #endif
 
 	ptepage = alloc_pages(flags, 0);