highmem: kill all __kmap_atomic()
[swarren@nvidia.com: highmem: Fix ARM build break due to __kmap_atomic rename]

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Cong Wang <amwang@redhat.com>
diff --git a/arch/arm/include/asm/highmem.h b/arch/arm/include/asm/highmem.h
index a4edd19..8c5e828 100644
--- a/arch/arm/include/asm/highmem.h
+++ b/arch/arm/include/asm/highmem.h
@@ -57,7 +57,7 @@
 #ifdef CONFIG_HIGHMEM
 extern void *kmap(struct page *page);
 extern void kunmap(struct page *page);
-extern void *__kmap_atomic(struct page *page);
+extern void *kmap_atomic(struct page *page);
 extern void __kunmap_atomic(void *kvaddr);
 extern void *kmap_atomic_pfn(unsigned long pfn);
 extern struct page *kmap_atomic_to_page(const void *ptr);