microblaze: Kill __kmap_atomic()

This should be the part of this patch:
"highmem: kill all __kmap_atomic()"
(sha1: a24401bcf4a67c8fe17e649e74eeb09b08b79ef5)

Signed-off-by: Michal Simek <michal.simek@xilinx.com>

arch/microblaze/include/asm/highmem.h

@@ -71,7 +71,7 @@ static inline void kunmap(struct page *page)
 	kunmap_high(page);
 }
 
-static inline void *__kmap_atomic(struct page *page)
+static inline void *kmap_atomic(struct page *page)
 {
 	return kmap_atomic_prot(page, kmap_prot);
 }